投稿時間:2023-02-04 07:17:15 RSSフィード2023-02-04 07:00 分まとめ(19件)

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Google	カグア！Google Analytics 活用塾:事例や使い方	Twitterアカウント凍結騒動への対応まとめ	https://www.kagua.biz/social/twitter/20230204a2.html	twitter	2023-02-03 21:00:41
AWS	AWS Compute Blog	Quick Restoration through Replacing the Root Volumes of Amazon EC2 instances	https://aws.amazon.com/blogs/compute/quick-restoration-through-replacing-the-root-volumes-of-amazon-ec2/	Quick Restoration through Replacing the Root Volumes of Amazon EC instancesThis blog post is written by Katja Maja Krödel IoT Specialist Solutions Architect and Benjamin Meyer Senior Solutions Architect Game Tech Customers use Amazon Elastic Compute Cloud Amazon EC instances to develop deploy and test applications To use those instances most effectively customers have expressed the need to set back their instance to a previous state …	2023-02-03 21:59:33
AWS	AWS	World Fuel Services CISO discusses how moving to the cloud increased security | Amazon Web Services	https://www.youtube.com/watch?v=3ZNub18Ogps	World Fuel Services CISO discusses how moving to the cloud increased security Amazon Web ServicesIn this sit down interview Clarke Rodgers Enterprise Security Strategist with AWS talks with Shawn Bowen Vice President and Chief Information Security Officer CISO with World Fuel Services about his experience in cybersecurity as he transitioned from working for the government to the business sector Shawn also discusses what he is currently doing to help build a cybersecurity culture within World Fuel Services as they move operations to the cloud Learn more at Subscribe More AWS videos More AWS events videos ABOUT AWSAmazon Web Services AWS is the world s most comprehensive and broadly adopted cloud platform offering over fully featured services from data centers globally Millions of customers ーincluding the fastest growing startups largest enterprises and leading government agencies ーare using AWS to lower costs become more agile and innovate faster Cybersecurity WorldFuelServices AWS AmazonWebServices CloudComputing	2023-02-03 21:11:55
python	Pythonタグが付けられた新着投稿 - Qiita	Pythonでsymbolブロックチェーン上の複数のアドレスに一括でXYM送金。(23年2月)	https://qiita.com/ULUNTA2/items/96b45dd6765b96ebeb49	symbol	2023-02-04 06:43:37
python	Pythonタグが付けられた新着投稿 - Qiita	ChatGPTでニューラルネットのコードを書かせてみたらすごかった	https://qiita.com/0Kizw5B6S6Zi7Da/items/28fc13aec5cceca84e6c	chatgpt	2023-02-04 06:16:50
Azure	Azureタグが付けられた新着投稿 - Qiita	Azure VM 上のスクリプトファイルを Rest API で実行する	https://qiita.com/e99h2121/items/7012bd9cf84badc072cb	apivirtualmachines	2023-02-04 06:50:14
海外TECH	Ars Technica	Why would the Chinese government be flying a large stratospheric balloon?	https://arstechnica.com/?p=1914963	flight	2023-02-03 21:29:58
海外TECH	Ars Technica	Microsoft alleges attacks on French magazine came from Iranian-backed group	https://arstechnica.com/?p=1915010	charlie	2023-02-03 21:10:23
海外TECH	DEV Community	stop wasting time on meaningless news!	https://dev.to/norflin321/stop-wasting-time-on-meaningless-news-3bdm	stop wasting time on meaningless news Do you often find yourself distracted from productive work by attention sucking and meaningless news or propaganda Stop it You can stay inform about open source projects and important news enough By reading only Github Trends and HackerNews But wouldn t it be perfect if everything you needed was in one place Yes it would Check this out	2023-02-03 21:36:24
海外TECH	DEV Community	TIL: Python virtual environments and venv	https://dev.to/joeljuca/til-python-virtual-environments-and-venv-c8e	TIL Python virtual environments and venvI m learning Python The reason is well Python is the lingua franca of the Data Science world and I intend to work with it eventually I m also an old school programmer so I m not convinced that just use X is the right approach I refuse to just rely on a Jupyter notebook like Google Collab etc so I got to work with Python in real world which means CLI Python packages dependencies and virtual environments At first sight virtual environments were super confusing The name virtual environment doesn t help understanding what it is Plus there are so many ways to set up virtual environments that I was quite lost between all the names and projects libraries and techniques etc Yeah there was some friction to truly understand it and I m still on my way to learn it all With it said I m sticking with Python s built in virtual environment tool for now venv So the rest of this post assumes venv is being used to work with virtual environments WTF are virtual environments anyway So far a virtual environment seem to be a command line trick to isolate a project from each other The Python packaging doesn t seem to assume the concept of local package installation eg Node js node modules it keeps packages into either a global system wide scope or a local user wide scope each system user ending up with its own set of Python package installs The problem is that to work on multiple Python projects using your own OS user you would have conflicts with package versions just like how you would with a global package scope So virtual environments solve this issue It tricks both Python and pip to install and load packages into a local directory aka your project s directory instead of global wide or user wide directories It allows you to work on different projects with the same dependencies but different versions without conflicts That s it A quite common approach of pretty much any modern programming language today How to use venvvenv is a built in Python module that does exactly this manage virtual environments It is a subset of virtualenv a Python module that used to be the standard way to set up virtual environments but now compete with other options like venv Using it is really very simple venv is built in so you don t even need to install it it s already available for you if you re using Python v or newer To create a virtual environment run python m venv venvIt will create a virtual environment into the venv directory You can name it however you like but venv seems to be a popular choice so I m sticking to it Then in order to use it you must activate it first source venv bin activateHere s the magic When you activate the virtual environment it will trick python python pip and pip to install and load packages from to venv So each project will have this separation of dependencies After you ve activated your virtual environment you can install your local project specific dependencies with pip possibly with the help of a requirements txt pip install r requirements txtAnd when you re done working with this project for the day you can deactivate exit from the virtual environment with deactivate TILsvenv is quite easy to use and work with It does not isolate runtime versions though It seem there are some other projects to do it but I didn t get to them just yet Also there were a few things that really confused me along the way For instance Python literacy talks about virtual environments as something that isolates Python projects with everything including Python pip etc and from it I understood that it somehow could embed a specific Python runtime too After reading a ton of things online discussing with people in IRC and Telegram chats I finally understood that venv does not embed specific Python runtime versions just dependencies The next thing I want to try is virtualenv which seem more feature rich I ll post my findings here Thanks for reading	2023-02-03 21:31:58
海外TECH	DEV Community	The ABCs of TypeScript Generics	https://dev.to/msp99000/the-abcs-of-typescript-generics-2l3n	The ABCs of TypeScript Generics Table of Contents Introduction What are TypeScript Generics Why Use Generics in TypeScript How do TypeScript Generics Work How do TypeScript Generics Work Conclusion IntroductionGenerics in TypeScript provide a way to make the code more flexible and reusable by allowing the same code to work with different data types The concept of generics is not unique to TypeScript and can be found in other programming languages as well In this blog we will explore what TypeScript Generics are how they work and their applications What are TypeScript Generics TypeScript Generics allow us to write functions classes and interfaces that can work with any data type making the code more reusable When using generics we can define a type placeholder which is a parameter that is used to specify the data type of the elements being processed by the code This placeholder can then be used throughout the code and is replaced with the actual data type when the code is compiled Why Use Generics in TypeScript Generics are useful in TypeScript because they allow us to write code that can handle different data types in a flexible and reusable manner By using generics we can create functions classes and interfaces that can be used with any data type making the code more versatile and easier to maintain The use of generics also ensures that the code is type safe reducing the risk of runtime errors caused by type mismatches How do TypeScript Generics Work Generics in TypeScript work by using type parameters Type parameters are placeholders for the data type of the elements being processed by the code When the code is compiled these type parameters are replaced with the actual data type specified when the code is used To use generics in TypeScript we need to define a type parameter when declaring the function class or interface This type parameter is then used throughout the code to specify the data type of the elements being processed Let s take a look at an example to see how generics work in TypeScript Example Writing a Function with GenericsConsider the following code which defines a function to find the minimum value in an array of numbers function findMin numbers number let min numbers for let i i lt numbers length i if numbers i lt min min numbers i return min In this code the function findMin is defined to work only with arrays of numbers But what if we want to use the same function to find the minimum value in an array of strings or an array of any other data type To make the function more flexible and reusable we can use generics Here s how the code would look using generics function findMin lt T gt values T let min values for let i i lt values length i if values i lt min min values i return min In this code the type parameter T is defined in the function declaration and the parameter values is of type T The type parameter T is used throughout the code to specify the data type of the elements in the array Now we can use the function findMin with arrays of any data type including numbers strings or any other data type Here s how we would use the function with an array of numbers let numbers let minValue findMin numbers console log minValue Output And here s how we would use the function with an array of strings let names John Jane Jim Joan let minName findMin names console log minName Output Jane As we can see the function findMin can be used with arrays of different data types making it more flexible and reusable Example Writing a Class with GenericsLet s consider another example where we want to create a generic stack class that can be used with any data type A stack is a data structure that allows us to add and remove elements in a Last In First Out LIFO order Here s how the stack class would look without using generics class Stack private items number constructor this items push item number this items push item pop return this items pop In this code the stack class is defined to work only with numbers But what if we want to use the same class to create stacks of strings or any other data type To make the class more flexible and reusable we can use generics Here s how the code would look using generics class Stack lt T gt private items T constructor this items push item T this items push item pop return this items pop In this code the type parameter T is defined in the class declaration and the type of the private property items is T The type parameter T is used throughout the code to specify the data type of the elements in the stack Now we can use the stack class with any data type including numbers strings or any other data type Here s how we would use the class with numbers let numbersStack new Stack lt number gt numbersStack push numbersStack push numbersStack push console log numbersStack pop Output console log numbersStack pop Output console log numbersStack pop Output And here s how we would use the class with strings let namesStack new Stack lt string gt namesStack push John namesStack push Jane namesStack push Jim console log namesStack pop Output Jim console log namesStack pop Output Jane console log namesStack pop Output John As we can see the stack class can be used with different data types making it more flexible and reusable ConclusionGenerics in TypeScript provide a way to write code that can work with multiple data types making the code more flexible and reusable By using type parameters and generic types we can write functions and classes that can work with any data type This allows us to write code that is not specific to a particular data type and can be reused for multiple data types reducing code duplication and improving the overall quality of our code In this blog we have seen how to use TypeScript Generics and their applications through two examples including a generic function to find the minimum value in an array and a generic class to implement a stack data structure Understanding and using Generics in TypeScript is an important aspect of writing robust and efficient code and is a skill that every TypeScript developer should have in their toolkit In conclusion TypeScript Generics provide a way to create generic components and functions that can be used with different data types They can be used to create flexible and reusable code making it easier to maintain and extend TypeScript Generics are particularly useful when working with arrays classes and functions where the same code can be used with different data types They allow us to write code that can work with any data type making it easier to write test and maintain while reducing code duplication and improving the overall quality of our code If you are a TypeScript developer taking the time to understand and use TypeScript Generics can greatly improve the quality and efficiency of your code Hope this is helpful Do Like ️ amp Save For more Tips Guides Resources ️related to Programming Machine Learning AI Data Science amp Web Development ‍Do Follow me on LinkedInGithubTwitterPolyworkInstagramMedium	2023-02-03 21:22:37
海外TECH	DEV Community	React Native vs Flutter: A Comparison	https://dev.to/get_pieces/react-native-vs-flutter-a-comparison-4agd	React Native vs Flutter A Comparison​Currently the two most popular frameworks for building cross platform mobile apps are React Native and Flutter These titans are supported by Facebook and Google two of the largest tech businesses in the world Presently there are more than billion mobile users worldwide and of developers will pick Flutter over React when creating apps according to Statista Cordova the third most popular framework is only selected by of users Flutter has been used by more than million developers and of them do so each month Although the numbers are incredibly impressive many of them depend on how popular mobile apps are with users What Is React Native The Facebook developed mobile programming framework React Native was made public in Using React Native developers can create a multi platform application that works on desktops mobiles and the web React Native lowers the entry level threshold for JavaScript developers by making it comparatively easy to create cross platform applications with a codebase written in JavaScript What Is Flutter The Flutter cross platform user interface framework was developed by Google Since its original release in May Flutter s popularity has continuously increased With Flutter businesses just need to maintain one codebase when developing apps for many platforms As a result the amount of time and resources involved in developing and maintaining the software is greatly decreased The Differences Between React Native and FlutterReact Native and Flutter share many similarities but they are also quite different in a handful of key ways Programming LanguageReact Native uses JavaScript as its programming language which means it transforms JavaScript components into native components This makes it easy for web developers to adapt quickly to React Native for mobile app development Flutter uses a language called Dart which is older and not widely used Dart has an object oriented class based system DocumentationBoth Flutter and React Native have high quality documentation materials This makes the development of apps simple for programmers React Native s documentation is less well organized because it also includes community developed dependent libraries Flutter has documentation that is well produced organized and comprehensive In contrast React Native s documentation requires some explanation Project SizeApplications built using React Native have a JavaScript runtime environment Although they often have larger build sizes Hermes and ProGuard can be enabled in React Native to decrease their size However Flutter apps typically have bigger file sizes Flutter apps increased build sizes tend to occupy more space Comparison React Native Vs FlutterNext we ll compare React Native with Flutter explore what makes each framework so special and discover why they re so highly sought after The comparison will be based on the following PerformanceLibraries and PackagesCommunityFile Structure PerformanceIt s difficult to say whether a Flutter or React Native app performs better There are numerous aspects to take into account like the type of app codebase animations transitions app size layout data passing the end user s phone and more Therefore it won t be the same for every app Both frameworks use hot reloading which speeds up development by allowing you to see changes immediately In contrast the Dart code used by Flutter is directly translated into C which is as close to native as you can get No bridges are necessary for Flutter code to communicate with native code It s safe to believe that this would result in improved performance giving Flutter an edge over React Native However recently JavaScript bridges which communicate with the native code and bridge them slowing app performance were replaced with JavaScript Interface in React Native s new architecture to address the performance issue JSI Without utilizing bridges JSI enables developers to call the native module directly With the help of their developer and user communities Flutter and React Native are both continually enhancing their performance As far as overall performance though Flutter actually narrowly prevails right now CommunityBoth the Flutter and React Native communities are thriving with numerous conferences hackathons and events taking place every year It s impossible to overstate the breadth of the community and available communication avenues where you can interact with professionals and get help with your development related questions Here is a comparison of each tool s most popular communication routes in more detail As the table above shows the Flutter community has expanded more than the React Native community This is significant since it indicates that more problems are being actively fixed by Flutter developers By looking at closed GitHub issues you can get a sense of the speed and attentiveness with which unresolved issues reported by developers are being handled Statistical ComparisonN B Data Information shown below is from Statista Stack Overflow Survey and Google Trends According to Statista s most recent study Flutter will be the top cross platform mobile development framework in React Native falls short of Flutter by versus for Flutter However it s accurate to say that both technologies are being used almost equally Hopefully their statistics for will be out soon Cross platform mobile frameworks employed by developers worldwide in and Source StatistaWe know that as of Flutter was leading the race for “cross platform mobile framework used by developers on Statista In addition the recently conducted Stack Overflow Survey is more current and includes both frameworks and it includes statistics as well According to the results of the Stack Overflow Survey in terms of usage and popularity Flutter was on the verge of surpassing React Native as of With React Native was taking precedence over Flutter during the year Currently in Flutter has overthrown React Native in the popularity contest This survey shows that Flutter technology has now taken the lead In the Stack Overflow Survey Flutter beat React Native in the category Most Popular Technology Other Frameworks A close race between the two is evident from data shown in Google Trends In April Flutter overtook React Native for the first time in over two years and it has maintained that position through Worldwide React Native blue and Flutter red quality trend Source Google Trends File StructureThe code structure in this part should look extremely familiar if you ve used React for the web Similar to how React projects are set up React Native projects follow the same architecture The widget based architecture of Flutter is highly distinctive when compared to conventional programming paradigms Once you understand how it operates it becomes automatic When to Apply Each FrameworkReact Native and Flutter are both efficient for fast styling and easy mobile app development However it s best to know when to use the different frameworks in developing a project Use React Native When You want to transition back and forth from a web application to a mobile application and have a single tech stack You have a JavaScript team that is knowledgeable about your current assets and utilizes the plug ins modules and widgets from the npm repository You need to locate a team of React Native engineers quickly unlike Flutter developers who are currently harder to find Use Flutter When Financial resources are limited no need to have multiple teams for native Android and iOS development You have a tight deadline and must quickly deliver a product You want pixel perfect designs and other elements that make a superb UI A cross platform experience mobile desktop etc is required ConclusionThere is no clear winner in this contest both Flutter and React Native have advantages and disadvantages and the best option relies on your development background as well as the objectives and specifications of your project It makes sense to write mobile apps in React Native if you re already familiar with JavaScript However you might want to think about giving Flutter a shot if you re hoping for improved performance stability and a more harmonious environment amongst ecosystems ResourcesFlutterReact Native	2023-02-03 21:08:21
海外TECH	DEV Community	Become a CSS Pro: The Ultimate Guide to Learning CSS	https://dev.to/lotfijb/become-a-css-pro-the-ultimate-guide-to-learning-css-2b30	Become a CSS Pro The Ultimate Guide to Learning CSSTo start with I am beyond grateful and humbled to have reached followers on this platform Your support and encouragement mean the world to me I never could have imagined this level of engagement in a short period of time and I am so grateful for each and every one of you Here s to many more followers and continued growth together Moving to CSSThe title might be a bit of clickbait because there is not only one way to learn CSS and master it but I am here today to share with you my insights after almost years of writing CSS What I recommend is to understand the basics like how to write CSS code meaning the syntaxnav display flex After learning basic selectors box model some text properties you just have to make your hands dirty and jump into your preferred code editor and start building some projects start by cloning websites like Google Wikipedia etc just the front end we are not worrying about functionalities now Learning CSS can be a complex and challenging journey but it can also be extremely rewarding While starting with the fundamentals is important the right order to learn CSS is not set in stone After mastering the basics the real key to learning CSS is to start creating This will allow you to run into obstacles and limitations that you need to overcome and will help you identify what you need to learn next in order to achieve your goals The process may not be linear but by tackling challenges and building upon your knowledge over time you will gradually strengthen your understanding of CSS It s normal to feel frustrated at times but it s important to remember that the journey to mastering CSS is not about following a specific roadmap but about continually expanding your knowledge and skills So don t be discouraged by setbacks or detours along the way and keep pushing yourself to learn more And remember the real reward is the ability to create beautiful functional websites and web applications So embrace the challenge and keep pushing forward the results will be well worth it Here is a Github repository with plenty of resources to learn CSS CSS For BeginnersFollow me here Visit my PortfolioGithubLinkedInTwitterMore reads How did I build my portfolioHow did I build my first browser extension	2023-02-03 21:05:35
海外TECH	Engadget	NASA satellite will use radar to map Earth's crust in extreme detail	https://www.engadget.com/nasa-india-nisar-radar-satellite-215200448.html?src=rss	NASA satellite will use radar to map Earth x s crust in extreme detailScientists will soon have a spaceborne tool to study environmental changes at a very high resolution and you won t have long to wait to learn more about it NASA s Jet Propulsion Laboratory is holding a question and answer session today February rd at PM Eastern to discuss NISAR NASA ISRO SAR an Earth mapping satellite built in tandem with the Indian Space Research Organization It s not launching from India until early and is planned to operate for three years but it includes breakthrough tech that could help understand Earth and cope with natural disasters nbsp NISAR is the first radar imaging satellite to use dual frequencies the L and S microwave bands This will let it systematically map the Earth s crust at an exceptional level of detail ーit can detect changes under cm in across That will let NISAR observe even subtle nuances of earthquakes tsunamis and other disasters It will also help monitor long term processes including the crust s evolution ecosystem disruptions and ice sheet collapses See NISAR in NASAJPL s clean room today at pm ET UTC Set to launch from India in it will measure the movement of Earth s surfaces to provide info on trends that affect global challenges like food security ーNASA NASA February Access to data will also play an important role NISAR offers worldwide coverage every days making time based imagery more practical The mission team hopes to make data readily available to the public in one to two days but can deliver that data within hours in an emergency Anyone willing to parse the information can make use of it With an estimated billion price NISAR is expected to be the most expensive Earth imaging satellite to date The investment may be worthwhile though The satellite s data could help governments react to and prepare for natural disasters and improve humanity s understandings of climate change and threats to food security	2023-02-03 21:52:00
海外TECH	Engadget	Researchers can now pull hydrogen directly from seawater, no filtering required	https://www.engadget.com/clean-hydrogen-fuel-split-seawater-214042411.html?src=rss	Researchers can now pull hydrogen directly from seawater no filtering requiredResearchers at the University of Adelaide announced this week that they made clean hydrogen fuel from seawater without pre treatment Demand for hydrogen fuel a clean energy source that only produces water when burned is expected to increase in the coming years as the world hopefully continues to pivot away from fossil fuels The findings could eventually provide cheaper green energy production to coastal areas “We have split natural seawater into oxygen and hydrogen with nearly per cent efficiency to produce green hydrogen by electrolysis using a non precious and cheap catalyst in a commercial electrolyser said Professor Shizhang Qiao the team s co lead Seawater typically needs to be purified before electrolysis splits it into hydrogen and oxygen The team says its results using cobalt oxide with chromium oxide on its surface as the catalyst had similar performance to a standard process of applying platinum and iridium catalysts to highly purified and deionized water Compared to freshwater seawater is an abundant resource and the ability to extract hydrogen fuel from seawater without pre treatment could save money However even if successfully scaled it would likely only be practical for coastal communities with plenty of seawater ーnot so much for Iowa or Kansas The team s next step is to scale the system with a larger electrolyzer Then although it s still early in development the researchers hope to eventually apply the findings to commercial hydrogen production for fuel cells and ammonia synthesis Co lead Yao Zheng summarized “Our work provides a solution to directly utilise seawater without pre treatment systems and alkali addition which shows similar performance as that of existing metal based mature pure water electrolyser	2023-02-03 21:40:42
海外TECH	WIRED	MDMA and Psilocybin Are Approved as Medicines for the First Time	https://www.wired.com/story/australia-psilocybin-mdma-approval/	psychedelic	2023-02-03 21:12:26
ニュース	BBC News - Home	Simon Case: 'Keeper of secrets' under scrutiny	https://www.bbc.co.uk/news/uk-politics-64518188?at_medium=RSS&at_campaign=KARANGA	figures	2023-02-03 21:23:15
ニュース	BBC News - Home	Chelsea 0-0 Fulham: Enzo Fernandez makes his debut but Blues held	https://www.bbc.co.uk/sport/football/64421607?at_medium=RSS&at_campaign=KARANGA	Chelsea Fulham Enzo Fernandez makes his debut but Blues heldBritish record signing Enzo Fernandez makes his Chelsea debut but cannot help his new side to victory as they are held by Fulham at Stamford Bridge	2023-02-03 21:54:11
ビジネス	東洋経済オンライン	日本の景気は思ったよりも良くなるかもしれない 家計に眠る｢巨額の金｣に加え､意外な追い風も | 新競馬好きエコノミストの市場深読み劇場 | 東洋経済オンライン	https://toyokeizai.net/articles/-/650299?utm_source=rss&utm_medium=http&utm_campaign=link_back	岡山県倉敷市	2023-02-04 06:30:00