投稿時間:2021-11-25 23:35:52 RSSフィード2021-11-25 23:00 分まとめ(43件)

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IT	気になる、記になる…	Fitbit、対象のフィットネストラッカーやスマートウォッチを最大7,000円オフで販売するブラックフライデーセールを開催中	https://taisy0.com/2021/11/25/148992.html	fitbit	2021-11-25 13:31:02
IT	気になる、記になる…	新型コロナ接触通知アプリ｢COCOA｣、最新版にアップデートで起動不能に	https://taisy0.com/2021/11/25/148987.html	cocoa	2021-11-25 13:07:48
IT	ITmedia 総合記事一覧	[ITmedia News] 「povo2.0」の専用アプリなどで一時障害　アプリ再ダウンロード用に300MBの“詫びメガ”を配布	https://www.itmedia.co.jp/news/articles/2111/25/news187.html	itmedia	2021-11-25 22:11:00
js	JavaScriptタグが付けられた新着投稿 - Qiita	JSでCSV操作	https://qiita.com/neras_1215/items/c7a1b0e610c3d85a8a1b		2021-11-25 22:12:20
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	「? 1 : 0」とは？（Rails）	https://teratail.com/questions/371008?rss=all	「」とはRails知りたいこと以下の変数があった時に、語尾のnbspnbspnbspnbspnbspは、どう意味でしょうかPostposttypepostidnbspこちらはの「nbspnbspnbsp」は、の前の内の条件分岐に当てはまれば、手前数値となり、そうでなければとなる。	2021-11-25 22:40:43
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Laravelの環境構築について	https://teratail.com/questions/371007?rss=all	Laravelの環境構築について前提・実現したいことlaravelの環境構築の際、以下のメッセージが出てきてしまい、うまくいきません。	2021-11-25 22:30:10
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Spyder で外部モジュールの導入	https://teratail.com/questions/371006?rss=all	pipnbspinstallnbsplmfit	2021-11-25 22:22:27
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Google API を使わずにGoogle画像検索で画像収集のコードの実行後	https://teratail.com/questions/371005?rss=all	GoogleAPIを使わずにGoogle画像検索で画像収集のコードの実行後前提・実現したいことpython学習中のプログラミング初心者です。	2021-11-25 22:20:21
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	while構文から抜け出せません	https://teratail.com/questions/371004?rss=all	while構文から抜け出せませんPybricksというLegoが出しているMoveHubを使ってロボット動かすことをしています。	2021-11-25 22:02:35
Azure	Azureタグが付けられた新着投稿 - Qiita	最新のマイクロソフト認定資格を手に入れろ。英語配信の試験に合格するコツ。	https://qiita.com/bory-kb/items/57d177f6a4cfc640d92e	公式ドキュメントで合格する学習にブーストをかけろmstepクラスルームの試験対策講座学習教材についての注意事項まとめまずはとにかく日本語で効率を落とさない学習方法注意一夜漬けのような詰め込み学習を推奨しているわけではありません英語での資格試験にチャレンジする場合、とにかく最初にすべきことは学習教材を片っ端から日本語に翻訳することです。	2021-11-25 22:23:59
技術ブログ	Mercari Engineering Blog	「Merpay Advent Calendar 2021」開催のお知らせ	https://engineering.mercari.com/blog/entry/20211125-merpay-advent-calendar-2021/	hellip	2021-11-25 14:30:21
技術ブログ	Mercari Engineering Blog	メルカリ Advent Calendar 2021 を実施します！	https://engineering.mercari.com/blog/entry/20211125-mercari-advent-calendar-2021/	hellip	2021-11-25 14:30:16
技術ブログ	Mercari Engineering Blog	拡大し続ける開発組織の生産性を向上させるメルカリのクライアントCI/CDチーム #TeamInterview	https://engineering.mercari.com/blog/entry/20211125-mercari-client-cicd-interview/	hellip	2021-11-25 14:09:52
技術ブログ	Developers.IO	Twilio Alert System	https://dev.classmethod.jp/articles/twilio-alert-system-2/	Twilio Alert SystemIntroduction Hi I am Akshay Rao working in Classmethod India in this blog I will be introducing a alert syst	2021-11-25 13:36:00
海外TECH	MakeUseOf	The 7 Best Laptops for Animation	https://www.makeuseof.com/best-laptops-for-animation/	animation	2021-11-25 13:50:11
海外TECH	DEV Community	Backtracking in JAVA	https://dev.to/nikhilesh2601/backtracking-in-java-3la0	Backtracking in JAVABacktracking is an algorithmic technique for solving problems recursively by trying to build a solution incrementally one piece at a time removing those solutions that fail to satisfy the constraints of the problem at any point of time by time here is referred to the time elapsed till reaching any level of the search tree There are three types of problems in backtracking Decision Problem In this we search for a feasible solution Optimization Problem In this we search for the best solution Enumeration Problem In this we find all feasible solutions How to determine if a problem can be solved using Backtracking Generally every constraint satisfaction problem which has clear and well defined constraints on any objective solution that incrementally builds candidate to the solution and abandons a candidate “backtracks as soon as it determines that the candidate cannot possibly be completed to a valid solution can be solved by Backtracking However most of the problems that are discussed can be solved using other known algorithms like Dynamic Programming or Greedy Algorithms in logarithmic linear linear logarithmic time complexity in order of input size and therefore outshine the backtracking algorithm in every respect since backtracking algorithms are generally exponential in both time and space However a few problems still remain that only have backtracking algorithms to solve them until now Consider a situation that you have three boxes in front of you and only one of them has a gold coin in it but you do not know which one So in order to get the coin you will have to open all of the boxes one by one You will first check the first box if it does not contain the coin you will have to close it and check the second box and so on until you find the coin This is what backtracking is that is solving all sub problems one by one in order to reach the best possible solution Consider the below example to understand the Backtracking approach more formally Given an instance of any computational problem P and data D corresponding to the instance all the constraints that need to be satisfied in order to solve the problem are represented by C A backtracking algorithm will then work as follows The Algorithm begins to build up a solution starting with an empty solution set S S Add to S the first move that is still left All possible moves are added to S one by one This now creates a new sub tree s in the search tree of the algorithm Check if S s satisfies each of the constraints in C If Yes then the sub tree s is “eligible to add more “children Else the entire sub tree s is useless so recurs back to step using argument S In the event of “eligibility of the newly formed sub tree s recurs back to step using argument S s If the check for S s returns that it is a solution for the entire data D Output and terminate the program If not then return that no solution is possible with the current s and hence discard it Difference between Recursion and Backtracking In recursion the function calls itself until it reaches a base case In backtracking we use recursion to explore all the possibilities until we get the best result for the problem Pseudo Code for Backtracking Recursive backtracking solution void findSolutions n other params if found a solution solutionsFound solutionsFound displaySolution if solutionsFound gt solutionTarget System exit returnfor val first to last if isValid val n applyValue val n findSolutions n other params removeValue val n Finding whether a solution exists or not boolean findSolutions n other params if found a solution displaySolution return true for val first to last if isValid val n applyValue val n if findSolutions n other params return true removeValue val n return false Let us try to solve a standard Backtracking problem N Queen Problem The N Queen is the problem of placing N chess queens on an N×N chessboard so that no two queens attack each other For example following is a solution for Queen problem The expected output is a binary matrix which has s for the blocks where queens are placed For example following is the output matrix for the above queen solution Backtracking Algorithm The idea is to place queens one by one in different columns starting from the leftmost column When we place a queen in a column we check for clashes with already placed queens In the current column if we find a row for which there is no clash we mark this row and column as part of the solution If we do not find such a row due to clashes then we backtrack and return false Start in the leftmost column If all queens are placed return true Try all rows in the current column Do following for every tried row a If the queen can be placed safely in this row then mark this row column as part of the solution and recursively check if placing queen here leads to a solution b If placing the queen in row column leads to a solution then return true c If placing queen doesn t lead to a solution then unmark this row column and go to step a to try other rows If all rows have been tried and nothing worked return false to trigger backtracking Examples for backtracking Program import java util Scanner public class pro public static void main String args Scanner scanner new Scanner System in System out println Enter the values of m and n int m scanner nextInt int n scanner nextInt int result grid m n System out println Result result public static int grid int x int y int m int n if x m amp amp y n return else if x lt m amp amp y lt n return grid x y m n grid x y m n else return Program import java util Scanner import java lang Math public class pro private static double MAX Math pow public static int countOrders int n int sumTillNow double productTillNow for int i i lt n i for int j i j lt i j sumTillNow j productTillNow sumTillNow productTillNow productTillNow MAX return int productTillNow public static void main String args Scanner scanner new Scanner System in System out println Enter the values of n int n scanner nextInt System out println Result countOrders n Program import java util Scanner public class pro private static int mod public static void main String args Scanner scanner new Scanner System in System out println Enter n and k int n scanner nextInt int k scanner nextInt System out println Result rearrangeSticks n k public static int rearrangeSticks int n int k int dp new int n k return helper n k dp public static int helper int n int k int dp int result if n k return if k return if dp n k dp n k int L helper n k dp L helper n k dp n mod return dp n k Note For more examples just visit leetcode and practice	2021-11-25 13:37:36
海外TECH	DEV Community	#Multithreading in Java	https://dev.to/ritwin59/multithreading-in-java-5265	Multithreading in Java MultithreadingMultithreading is a Java feature that allows concurrent execution of two or more parts of a program for maximum utilization of CPU Each part of such program is called a thread So threads are light weight processes within a process Threads can be created by using two mechanisms Extending the Thread class Implementing the Runnable Interface Extending the Thread classThread creation by extending the Thread classWe create a class that extends the java lang Thread class This class overrides the run method available in the Thread class A thread begins its life inside run method We create an object of our new class and call start method to start the execution of a thread Start invokes the run method on the Thread object Example class MultithreadingDemo extends Thread public void run try Displaying the thread that is running System out println Thread Thread currentThread getId is running catch Exception e Throwing an exception System out println Exception is caught Main Classpublic class Multithread public static void main String args int n Number of threads for int i i lt n i MultithreadingDemo object new MultithreadingDemo object start OutputThread is runningThread is runningThread is runningThread is runningThread is runningThread is runningThread is runningThread is running Implementing the Runnable InterfaceThread creation by implementing the Runnable InterfaceWe create a new class which implements java lang Runnable interface and override run method Then we instantiate a Thread object and call start method on this object Java code for thread creation by implementing the Runnable Interfaceclass MultithreadingDemo implements Runnable public void run try Displaying the thread that is running System out println Thread Thread currentThread getId is running catch Exception e Throwing an exception System out println Exception is caught Main Classclass Multithread public static void main String args int n Number of threads for int i i lt n i Thread object new Thread new MultithreadingDemo object start OutputThread is runningThread is runningThread is runningThread is runningThread is runningThread is runningThread is runningThread is running Thread Class vs Runnable InterfaceIf we extend the Thread class our class cannot extend any other class because Java doesn t support multiple inheritance But if we implement the Runnable interface our class can still extend other base classes We can achieve basic functionality of a thread by extending Thread class because it provides some inbuilt methods like yield interrupt etc that are not available in Runnable interface Using runnable will give you an object that can be shared amongst multiple threads	2021-11-25 13:25:14
海外TECH	DEV Community	React: different types of state management	https://dev.to/mgustus/react-different-types-of-state-management-3m6n	React different types of state managementThis is my categorization of different types of state management in React   React contextThis is a native mechanism in react core Actually context is not exactly state management tool it is kind of Dependency Injection Context provides a way to pass data through the component tree without having to pass props down manually at every level It is best used when you have some value that is rarely changed and you want to make it accessible to a portion of your React component tree without passing that value down as props through each level of components Issues Context hell using this approach as a state management tool will lead us to many nested contexts in different places in react tree Making a change in some inner param of the state object that is stored in a context will rerender all the consumers of this context even if they don t use this specific param So context can only store a single value not an indefinite set of values each with its own consumers   Global storeredux zustandCentralized application state and logic Notes redux One of the most known state management solutions in JS world Lots of boilerplate actions reducers selectors zustand A small fast and scalable state management solution using simplified flux principles It requires much less boilerplate code due to its opinionated approach In zustand the store doesn t have to be global but still Complicated store mutation Need to create immutable path when modifying some nested state Using utils like immer optic may help to manipulate the store   Magic storeMobX ValtioThis state management solution wraps the store params in a proxy So you deal with a proxy and not with the object directly You perform some simple operation and magically behind the scene the shared state changes Notes Need to be aware of the fact that it is proxy and of the specific rules of this kind of state management   Atomic modelrecoil jotaiA bottom up approach to React state management with an atomic model Atoms are units of state They re updateable and subscribable One can build state by combining atoms and renders are optimized based on atom dependency This solves the extra re render issue of React context and eliminates the need for the memoization technique Notes A boilerplate free API where shared state has the same simple get set interface as React local state useState useAtom recoil is not production ready yet   Network request global cacheThese libraries help to perform network requests in React One of the main features of these libraries is to keep the requests in cache So next time you perform the same request you will get a cached response It doesn t metter where in the react tree you perform this request the cache is global and behaves like a global state management solution for network requests   REST cachereact query swrThese libraries have many features based on their sophisticated cache mechanism like Request Retry Revalidation Polling Prefetching and more Notes SWR stale while revalidate is a strategy to first return the data from cache stale then send the fetch request revalidate and finally come with the up to date data   Graphql cacheapollo urqlThese are graphql clients that keep cache of graphql network requests Their behavior is similar to the REST cache solutions from above The cache is global and behaves like a global state management solution for graphql requests Notes Apollo uses normalized cache which reduces data redundancy but is more complicated P S In my latest project I chose jotai react query and apollo	2021-11-25 13:15:50
海外TECH	DEV Community	Automatic scrolling for Chat app in 1 line of code + React hook	https://dev.to/deepcodes/automatic-scrolling-for-chat-app-in-1-line-of-code-react-hook-3lm1	Automatic scrolling for Chat app in line of code React hookWhile using WhatsApp twitch or any social media application your chat feed automatically scrolls to the bottom when a new message is sent received While building an application with a chat feature this is definitely an important feature you should ship If you don t understand what I am actually talking about try out this little demo I made Type a message and press enter as you send a new message it goes out of view and you have to scroll to view it If you want to try this interactive demo live head over to my original blog post It s actually pretty simple to fix this firstly we should know the container element which is wrapping all the chats Then select the element get the height using scrollHeight then set the element s vertical scroll height using scrollTop That s it const el document getElementById chat feed id of the chat container if el el scrollTop el scrollHeight Here s the new demo with this thing implemented Now it scrolls to the bottom when a new message comes in Now coming to the react implementation we will use useRef amp useEffect to get access to the element and handle the side effect This would take dep as an argument which will be the dependency for the useEffect and returns a ref which we will pass to the chat container element import React from react function useChatScroll lt T gt dep T React MutableRefObject lt HTMLDivElement gt const ref React useRef lt HTMLDivElement gt React useEffect gt if ref current ref current scrollTop ref current scrollHeight dep return ref Usage of the above hook const Chat gt const messages setMessages React useState const ref useChatScroll messages return lt div ref ref gt Chat feed here lt div gt	2021-11-25 13:10:18
海外TECH	DEV Community	Continuous Integration for Monorepos	https://dev.to/semaphore/continuous-integration-for-monorepos-28e3	Continuous Integration for MonoreposMonorepos are highly active code repositories spanning many projects These can test the limits of conventional continuous integration Semaphore is the only CI CD around with easy out of the box support for monorepos Monorepo workflows should be easy to set upA monorepo is a repository holding many projects each maintained by a separate developer or team Most times these code repositories while independent will share a common CI CD workflow Monorepos workflows present their own set of challenges By default a CI CD pipeline will run from beginning to end on every commit This is expected After all that s the continuous in continuous integration Running every job in the pipeline is perfectly logical on single project repositories But monorepos see a lot more activity than usual Even the smallest change will re run the entire pipeline ーit is time consuming and needlessly expensive It just doesn t make sense Semaphore recently introduced the change in function Thus adding the capability for change based execution With change criteria you can skip jobs when the relevant code has not been updated This will let you ignore parts of the pipeline you re not interested in re running How to set up monorepo workflowsIn this section we ll set up a monorepo pipeline We ll use the semaphore demo monorepo project as a starting point but you can adapt these steps to any CI CD workflow on Semaphore To follow this guide you ll need A GitHub account A Semaphore account Click on Sign up with GitHub to create a free trial account Go ahead and fork the repository on GitHub It contains three projects each one in a separate folder service billing written in Go calculates user payments service user a Ruby based user registration service Exposes a HTTP REST endpoint service ui which is a web UI component Written in Elixir All these parts are meant to work together but each one may be maintained by a separate team and written in a different language Next log in with your Semaphore account and click on Create New on the upper left corner Now choose the repository you forked You can add people to the project at this point When you re done click Continue and select “I want to configure this project from scratch We ll start with the billing application Find the Go starter workflow and click on customize You have to modify the job a bit before it works The billing app uses Go version So change the first line to sem version go The code is located in the services billing folder add cd services billing after checkout The full job should look like this sem version go export GOMODULE onexport GOPATH goexport PATH home semaphore go bin PATHcheckoutcd services billinggo get go test go build v Now click on Run the workflow Type “master in Branch and click on Start Choosing the right branch matters because it affects how commits are calculated We ll talk about that in a bit Semaphore should start building and testing the application Let s add a second application in the pipeline Open editor by clicking on Edit Workflow on the upper right corner Add a new block Then add the commands to install and test a Ruby application sem version ruby checkoutcd services userscache restorebundle installcache storebundle exec ruby test rbAnd uncheck all the checkboxes under Dependencies Add a third block to test the UI service The following installs and tests the app Remember to uncheck all block dependencies checkoutcd services uisem version elixir cache restoremix local hex forcemix local rebar forcemix deps getmix deps compilecache storemix testNow can you guess what happens if we change a file inside the services ui folder Yeah despite only one of the projects has changed all the blocks are running This is…not optimal For a big monorepo with hundreds of projects you can imagine that s a lot of wasted CPU cycles The good news is that this is a perfect fit for trying out change based execution Change based execution with change inThe change in function calculates if recent commits have changed code in a given file or folder We must call this function at the block level If it detects changes then all the jobs in the block will be executed Otherwise the whole block is skipped change in allows us to tie a specific block to parts of the repository We can call the function from any block by opening the Skip Run Conditions section and enabling the option “Run this block when conditions are met The basic usage of the function is change in web This will run the block if any files inside the web folder change Absolute paths start with and reference the root of the repository Relative paths don t start with a slash they are relative to the pipeline file which is located inside the semaphore folder We can also target a specific file change in package lock json Wildcards are supported too change in package json Also you re not limited to monitoring one path you may define lists of files or folders This block for instance will run when the web folder or the manifests kubernetes yml file changes both simultaneously changing work too change in web manifests kubernetes yml The function can take a second optional argument to change its behavior For instance if your repository default branch is main instead of master GitHub s new default you ll need to add default branch main change in web default branch main Semaphore will re run all jobs when we update the pipeline We can disable this behavior with pipeline file ignore change in web pipeline file ignore Another useful option is exclude which lets us ignore files or folders This option also supports wildcards For example to ignore all Markdown files change in web exclude web md To see the rest of the options check the conditions YAML reference Speeding up pipelines with change inLet s see how change in can help us speed up the pipeline Open the workflow editor again Pick one of the blocks and open the Skip Run conditions section Add some change criteria change in services billing Repeat the procedure for the rest of the blocks change in services ui And change in services users Now run the pipeline again The first thing you ll notice is that there s a new initialization step Here Semaphore is calculating the differences to decide what blocks should run You can check the log to see what is happening behind the scenes Once the workflow is ready Semaphore will start running all jobs one more time this happens because we didn t set pipeline file ignore The interesting bit comes later when we change a file in one of the applications This is what happens Can you guess which application I changed Yes that s right I added a file in the billing app As a result thanks to change in the rest of the blocks have been skipped because they didn t meet the change conditions If we make a change outside any of the monitored folders then all the blocks are skipped and the pipeline completes in just a few seconds Calculating commit rangesTo understand what blocks will run we must recognize how change in calculates the changed files in recent commits The commit range varies depending on if you re working on main master or a topic branch For the main branch Semaphore compares the changes in all the commits for the push then skips the change in blocks that do not have at least one match Semaphore takes a broader criteria for branches The commit range goes from the point of the first commit that branched off the mainline to the branch s head This means that Semaphore may re run blocks even on commits that seemingly don t match the change criteria Pull requests behave similarly The commit range is defined from the first commit that branched off the branch targeted for merging to the head of the branch Change based automatic promotionsWe can also use change in on autopromotions which let us automatically start additional pipelines on certain conditions To create a new pipeline open the workflow editor once more and click on Add First Promotion Check Enable automatic promotion You should see an example snippet you can use as a starting point You can combine change in and branch master AND result passed to start the pipeline when all jobs pass on the default branch change in services billing and branch master AND result passed Once done run the workflow to save the changes From now on when you make a change to the billing app the new pipeline will start automatically if all tests pass on master Tips for using change in effectivelyScaling up large monorepos with change in is easier if you follow these tips for organizing your code and pipelines Define a unified folder organization so you can use clean change conditions Design your blocks around project folders When needed add multiple files and folders to change in Use this to rebuild all the connected project components within a monorepo Keep branches small and merge them frequently to cut build times Use exclude and wildcards to ignore files that are not relevant such as documentation or READMEs Use change in in auto promotions to selectively trigger continuous delivery or deployment pipelines Monorepo workflows got a lot fasterWe ve learned how to best take advantage of Semaphore s features to run CI CD pipelines on monorepos With the change in function you may design faster pipelines that don t waste time or money re building already tested code Read more about monorepo CI CD workflows What is monorepo Monorepo workflowsChange in reference page	2021-11-25 13:08:18
海外TECH	DEV Community	Amazon Integration: Benefits, Pitfalls, and Solution to Implement It	https://dev.to/khrystyna_oliinyk_97b06d1/amazon-integration-benefits-pitfalls-and-solution-to-implement-it-1e2o	Amazon Integration Benefits Pitfalls and Solution to Implement ItFor any SaaS App provider the implementation of Amazon integration is of vital importance Such a connection opens the doors to a wide range of online store owners Thus you can expand your market share and increase your customer base dramatically In this article you will find out more about Amazon integration the pitfalls of integration development and the solution to easily integrate with this marketplace What Exactly Is Amazon IntegrationThe process of building a connection between any SaaS software or application and Amazon is known as Amazon integration It allows accessing and transferring data between Amazon and the particular SaaS software By connecting your SaaS solution with Amazon you ll be able to effortlessly manage all of the data related to products customers orders baskets and any other important data that online retailers have Amazon is among the most well known brands in the market being the world s biggest retailer Integrating your SaaS software with Amazon allows you to give your customers a variety of features such as order tracking customer management shipping management and so on Furthermore with outstanding Amazon integration merchants will regard you as a valuable business associate and you ll be able to offer your services within the Amazon marketplace So whether you operate a multi channel shipment order management or localization system you ll need a reliable Amazon integration to gain access to Amazon s network of merchants and eCommerce shops There are almost million merchants on Amazon They are all looking for SaaS software or application vendors who can help them better handle their customer data improve their processes and grow their businesses With the unified API integration solution developed by APICart you can support all Amazon merchants to benefit from using Amazon It is a win win scenario for all parties involved What Are the Advantages of Amazon IntegrationWhen we speak about Amazon integration there are indeed many advantages to take into account Integrating your SaaS application with Amazon allows you to get all data relating to categories products customers orders and baskets belonging to online merchants With over million Amazon retailers in you may get into this huge market by having an effective Amazon integration You can improve your performance and increase your market share What Are the Most Common Amazon Integration ChallengesTrying to connect your SaaS solution with Amazon without the help of a third party service is a time consuming process SaaS vendors encounter several problems and issues while attempting to establish an integration with the Amazon platform The integration process is lengthy and necessitates hiring a specialized programmer who can devote around two months to its development If the programmer is unfamiliar with Amazon s specifics he might have to invest considerably more time Moreover the Amazon API is quite old and necessitates a certain level of expertise and knowledge Only a CSV or XML file may be used to work with products shipments and other data Another issue you may experience during integration is with Amazon s API documentation which is challenging to use and handle due to the lack of practical examples Furthermore Amazon s customer support department is not as fast as needed so you may have to wait longer than hours to get a problem resolved Also you must hire experienced programmers to create and support a seamless Amazon integration A programmer s annual salary can range from k to more than k Additionally because this is a lengthy process you will require ongoing assistance after integration How to Improve the Integration Process SignificantlyLuckily there is a solution that will help you to easily integrate with Amazon and avoid the outlined above challenges Using APICart you can integrate with eCommerce platforms and marketplaces at once Its unified API works with any kind of app and system For example this list includes PIM order management systems shipping and supply chain management software data feed management software mobile app development price comparison solutions chatbots multi channel software email marketing and a wide range of other industries We provide simple integration with many platforms at the same time as well as over API methods for managing data from multiple eCommerce platforms In addition we provide flexible pricing options and a day free testing period Please contact us if you would like to learn more about our service or register a free APICart account right now and try our unified API solution for free	2021-11-25 13:04:34
海外TECH	DEV Community	Avoid These Costly Mistakes During Web Application Development	https://dev.to/codicacom/avoid-these-costly-mistakes-during-web-application-development-1ik6	Avoid These Costly Mistakes During Web Application DevelopmentThis article was originally posted on Codica Blog Did you know that over of startups fail after launch That s what findings of the Startup Genome Report tell us Skipping the market research hiring wrong specialists too early scaling this is an incomplete list of factors that may lead to failure In this article we will focus your attention on the most expensive mistakes you should avoid at any cost while building a web application Not creating a prototypeAfter checking the feasibility of your idea and defining the interests of your potential customers you need to show a working app version to the investors That s when a web application prototype comes to the rescue As a rule a prototype is a clickable mock up demonstrating the product s design and user flow Though it is far from a working application it can still show what features are really necessary or what should be added removed changed With the prototype you can greatly reduce web app development expenses and time Take a look at the mobile prototypes of the multi vendor vehicle marketplace designed by our team for the customer Skipping MVP developmentAfter getting positive feedback from early adopters and investors you may want to proceed to app development However we would recommend that you take it slowly and build a Minimum Viable Product MVP first In contrast to a prototype it is a working web application that includes only the basic features required for getting feedback from real users Saving on a software providerThe best way to proceed to building a web app is to hire a software development partner But what criteria should you consider in the first place Let s find out Domain expertiseChoose a software company with a solid background in building web solutions similar to your project The experienced agencies know how to reach your business goals through an app Relevant referencesSuch popular platforms as Clutch and GoodFirms will help you find a reliable software partner On these websites you can see the lists of the most trustworthy development companies These ratings take into account such factors as market presence relevant experience and client reviews Narrow technology stackPartner with the software provider that specializes in only a few technologies As a rule narrow focus means high expertise At Codica we specialize in Ruby Ruby on Rails React and Vue as we find these technologies the most suitable tools for web application development PortfolioIf you have an eye on some software company it would be useful to view their portfolio of works Case studies will prove that the chosen agency delivers user friendly and intuitive products You can see them on the company s website or visit such platforms as Behance and Dribbble Further product supportMake sure that a vendor guarantees further maintenance of your product It will not save funds in the short run but will keep support costs down in the future These are key factors that are worth your attention when you are searching for a software development company Follow these tips and you will find a partner that will build a product that fully meets your needs Creating needless functionalityDon t be so quick to implement all possible functionality You may create a complex user flow which will result in the unintuitive interface and the delayed product launch Besides these features may be unnecessary and will lead to a waste of time and budget To start with define the most required functionality and then gradually add new functions The MVP approach discussed above will help you with this task The initial version of Airbnb s website had only basic functionality Sign Up Sign In post function search options the listings nearby and the map navigation feature Forgetting about usabilitySometimes you need more than a visually appealing design and extensive functionality to satisfy users In this case make the web application intuitive to the max It means that users who interact with your app for the first time should not have any questions on how to use it Always keep customers in mind when developing your startup product Firstly focus your users attention on the core functionality Secondly follow the key usability principles to make your website user friendly Below you can see a screen of a travel management platform with a simple navigation panel created for our customer Neglecting the testing stageAnother popular misconception is that you can do without testing At first sight it may seem that your app is functioning properly In reality some functions and operations may contain errors and bugs As a result disappointed users may give up on using your application Therefore you need to spend some time testing the app and fixing bugs The chart below displays the web app development life cycle and the place of testing in it Bottom lineThese are the most common mistakes that can cost you an arm and a leg during web app development Now you know how to avoid them and release a successful and profitable application For more information on the matter read our full article Avoid These Costly Mistakes During Web Application Development	2021-11-25 13:03:49
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