投稿時間:2021-10-11 04:13:32 RSSフィード2021-10-11 04:00 分まとめ(14件)

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Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	LaravelのタスクスケジューラでDBに接続する方法	https://teratail.com/questions/363802?rss=all	LaravelのタスクスケジューラでDBに接続する方法前提・実現したいことここに質問の内容を詳しく書いてください。	2021-10-11 03:23:28
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	【C言語】free関数の想定外の挙動によりプログラムが強制的に停止する。	https://teratail.com/questions/363801?rss=all	【C言語】free関数の想定外の挙動によりプログラムが強制的に停止する。	2021-10-11 03:17:00
海外TECH	DEV Community	Introduction to Data structures and Algorithms in Python	https://dev.to/luxacademy/data-structures-and-algorithms-in-python-2i88	Introduction to Data structures and Algorithms in PythonData structures are a way of organizing and storing data so that they can be accessed and worked with efficiently while Algorithms are sequence of well defined instructions for solving a problem or a accomplishing a given task This article gives a detailed understanding of the most commonly used data structures that is Stack and queue and their implementation in python STACKStack is one of the earliest data structure defined in computer science as a linear data structure which stores items using LIFO Last In Last Out principle for insertion and deletion To get a clear understanding of a stack think about a pile stack of books You add a book at the top of the stack so the first one to be picked up will be the last one that was added to the stack Stack has two operations Push adds an item to the top of the stack Pop removes an item from the stack Why do we use stacks Stack are simple to learn and implement Stack allows us store and retrieve data sequentially Stacks take O time for insert and delete operations Real world use cases of a stack Web browsers use stack to keep track of URL that you have accessed previously When you visit a new page it is added to the stack when you hit the back button stack is popped and previous URL is accessed Undo mechanism in text editor uses stack to keep all changes To implement other data structures stack is used to implement searches in graphs and trees Compilers and Parsers uses stackMore applications of Stack Data structures Stack MethodsStack operations are implemented using the following methods stack IsEmpty Returns True if a stack is empty and false otherwise stack length Returns length of stack stack top returns a pointer reference to top element in stack stack push x inserts element x to the top of the stack stack pop Removes top element of stack and returns it Stack implementation in Python In python we can implement stack using the following ways Using the built in List data structure Using the deque library which efficiently provides stack operations in one object Stack Using List To implement stack using list append and pop methods are used append method in python adds a single item to the existing listpop removes the element at the specified positionExamples s append stack s append queue s append list s append tuple print s Output stack queue list tuple Using pops pop gt gt tuples pop gt gt lists pop gt gt queues pop gt gt stacks pop gt gt IndexError pop from empty listCheck this implementation Read More about stacks QUEUESJust like a stack a queue is a linear data structure Queue stores items using FIFO First in first out principle for insertion and deletion Operations Associated with Queue in Python Enqueue It adds an element to the end of the queue When the queue reaches its total capacity it reaches an overflow condition Dequeue Removes an element from the queue When the queue becomes empty it reaches an underflow condition Front returns the first item from the queue Rare Returns the last item from the queue Applications of a QueueA queue is useful in the following scenarios Handling interrupts in real time systems interrupts are handled in same order as they arrive Handling website traffic Serving request on a single shared resource like a printer or CPU task scheduling Applications of Queue Data Structure How to implement queue in PythonThere are different ways to implement a queue in Python The common ways are Using built in List data structure Using collections deque library Implementing a Queue in Python with a ListThe list s append and pop methods are used to insert and delete elements from the queue Initialize a queuequeue Adding elements to the queuequeue append Python queue append Javascript queue append Typescript print queue Output Python Javascript Typescript Removing elements from the queueprint queue pop print queue pop print queue pop print queue OutputPythonJavascriptTypescript Implementing a Queue in Python with collections dequeThe deque class from the python collections module can also be used to implement a queue It is more efficient because deque provides faster enqueue and dequeue operations rom collections import dequequeue deque queue append Black queue append White queue append Orange print queue Outputdeque Black White Orange I hope you enjoy reading the article as much as I enjoyed writing it the following are the useful resources and reference materials that i used Find the full source code hereUsing the Queue Data Structure in PythonHow to implement a queue in Python	2021-10-10 18:44:47
海外TECH	DEV Community	10 Free Cloud Storage	https://dev.to/beginnerdeveloper/10-free-cloud-storage-33i6	Free Cloud StorageWith cloud storage all your data is safely stored in a remote database so you do not need to store it locally on your computer hard drive or other storage device SyncMost cloud storage providers differ from Sync because they can access scan and read your files Sync s end to end encrypted storage platform and apps ensure that only you can access your data in the cloud Sync can t read your files and no one else can either Storage GB BlompStorage GBGet GB of storage for every referral Up to GB of storage can be added DegooAI based cloud storage that helps you rediscover your best photos Storage GB IcedriveYou can easily access manage and update your cloud storage with Icedrive a next generation cloud service Storage GB MegaCOVID has forever changed the way we work Working remotely is now a reality and the need to keep your data secure is more important than ever At MEGA we give millions of users with peace of mind thanks to our no compromise user controlled end to end encryption You can rest easy knowing MEGA is a very strong link in your security chain Storage GB Media FireFile storage made easy including powerful features you won t find anywhere else Whether you re sharing photos videos audio or docs MediaFire can simplify your workflow Storage GB pCloudNo matter how many files and folders you store in the pCloud all of your data will be at your fingertips Regardless of how you use your space in the cloud via web desktop or mobile your files are truly easy to manage Storage GB InternxtTransfer all your files to Yandex Disk to access and edit them as easily as files on your hard drive Storage GB Google Drive This one doesn t need a description Storage GBMy Blog Beginner Developer BlogWebsite	2021-10-10 18:08:46
海外TECH	DEV Community	React useState	https://dev.to/abhisheks12/react-usestate-4o71	React useStateHey guys this is my first blog Suppose we have to render name in react app We can save that name in simple variable and render that name But what if we want to change name to Alfred after clicking Change Name button so let s pass changeName function In changeName function if we change value of variable name to Alfred that s not going to work So here we use useState hook for using useState hook first we need to import it from react Example import useState from react With help of useState we set two variables like Here name variable represents Bruce after that in changeName function we use setName variable to set name to Alfred now after click name will change to Alfred We can pass different type of data in useState hook	2021-10-10 18:05:35
ビジネス	ダイヤモンド・オンライン - 新着記事	新型コロナは既知のもの？ウイルスに関する「常識」とは - 要約の達人　from flier	https://diamond.jp/articles/-/284302	fromflier	2021-10-11 03:50:00
ビジネス	ダイヤモンド・オンライン - 新着記事	自宅療養にも災害用の備蓄にも、家に買っておきたい「日持ちする食べ物」5選 - ストレスフリーな食事健康術　岡田明子	https://diamond.jp/articles/-/284315	自宅療養にも災害用の備蓄にも、家に買っておきたい「日持ちする食べ物」選ストレスフリーな食事健康術岡田明子コロナ禍で病院のリソースが足りなくなっていることもあり、少し具合が悪いくらいでは簡単に病院にかかれない日々が続いています。	2021-10-11 03:45:00
ビジネス	ダイヤモンド・オンライン - 新着記事	医療機器と財政との調和をどう図るか - 数字は語る	https://diamond.jp/articles/-/283987		2021-10-11 03:35:00
ビジネス	ダイヤモンド・オンライン - 新着記事	保険商品の開発担当者を悩ます「逆選択・モラルリスク」対処法 - ダイヤモンド保険ラボ	https://diamond.jp/articles/-/284314	集中	2021-10-11 03:30:00
ビジネス	ダイヤモンド・オンライン - 新着記事	米のワクチン義務化、宗教上の免除認められるか - WSJ PickUp	https://diamond.jp/articles/-/284311	wsjpickup	2021-10-11 03:25:00
ビジネス	ダイヤモンド・オンライン - 新着記事	米債務上限問題、投資家の慢心戒める修行の場 - WSJ PickUp	https://diamond.jp/articles/-/284312	wsjpickup	2021-10-11 03:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	自宅を映画のロケ地に　稼げるが問題も - WSJ PickUp	https://diamond.jp/articles/-/284313	wsjpickup	2021-10-11 03:15:00
ビジネス	ダイヤモンド・オンライン - 新着記事	【お寺の掲示板90】置かれた場所で咲けないときは - 「お寺の掲示板」の深～いお言葉	https://diamond.jp/articles/-/283621	自分自身	2021-10-11 03:10:00
ビジネス	ダイヤモンド・オンライン - 新着記事	【ひろゆきブーム徹底解剖】「炎上しない」ために必要な条件 - 1％の努力	https://diamond.jp/articles/-/284166	過言	2021-10-11 03:05:00