投稿時間:2023-02-25 22:17:04 RSSフィード2023-02-25 22:00 分まとめ(17件)

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IT	気になる、記になる…	【明日まで】Kindleストア、1万冊以上のKADOKAWAコミックを対象とした50％ポイント還元セールを開催中	https://taisy0.com/2023/02/25/168932.html	amazon	2023-02-25 12:27:57
IT	InfoQ	Google Cloud Adds New PCI DSS Policy Bundle	https://www.infoq.com/news/2023/02/gcp-pci-dss-policy-bundle/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=global	Google Cloud Adds New PCI DSS Policy BundleGoogle has recently added Payment Card Industry Data Security Standard PCI DSS Policy bundle to Anthos Config Management ACM In its version security administrators can now understand compliance with PCI DSS requirements using the Policy Controller Dashboard By Aditya Kulkarni	2023-02-25 12:30:00
AWS	lambdaタグが付けられた新着投稿 - Qiita	【AWS】Step Functionsによる非同期APIの作り方	https://qiita.com/grapefruit1030/items/6108665e1d7618c173fe	stepfunction	2023-02-25 21:56:25
python	Pythonタグが付けられた新着投稿 - Qiita	1NCE OSのEnergy Saverを使ってAWS IoTにデータを送ってみた	https://qiita.com/Takamasa_Hiratsuka/items/548fc35932ed84d3f678	awsiot	2023-02-25 21:35:56
python	Pythonタグが付けられた新着投稿 - Qiita	画像から人体の3Dモデルを生成する技術	https://qiita.com/pacifinapacific/items/d335a4daef1cefadc6f0	vtuber	2023-02-25 21:14:37
python	Pythonタグが付けられた新着投稿 - Qiita	PythonからDatabricks REST APIを呼び出してみる	https://qiita.com/taka_yayoi/items/d52186f8d218ea90e0c1	databricksrestapi	2023-02-25 21:04:50
AWS	AWSタグが付けられた新着投稿 - Qiita	【AWS】Step Functionsによる非同期APIの作り方	https://qiita.com/grapefruit1030/items/6108665e1d7618c173fe	stepfunction	2023-02-25 21:56:25
AWS	AWSタグが付けられた新着投稿 - Qiita	FSx File Gateway を構築してみた	https://qiita.com/sugimount-a/items/d01703b29054a0019522	fsxforwindowsfileserver	2023-02-25 21:41:10
golang	Goタグが付けられた新着投稿 - Qiita	【Go 入門】 Goで並列処理を体感してみよう	https://qiita.com/manabito76/items/448b77e2fc557016eadf	記事	2023-02-25 21:52:02
海外TECH	MakeUseOf	How Crypto Stealth Addresses Keep Your Transactions Private	https://www.makeuseof.com/how-crypto-stealth-addresses-keep-your-transactions-private/	handy	2023-02-25 12:16:16
海外TECH	MakeUseOf	Apple Discontinued the Newton 25 Years Ago: Here's What Happened to It Since	https://www.makeuseof.com/what-happened-to-apple-newton/	sincethe	2023-02-25 12:01:16
海外TECH	DEV Community	Debugging JavaScript Like a Pro: Tools and Techniques for Finding and Fixing Bugs	https://dev.to/iayeshasahar/debugging-javascript-like-a-pro-tools-and-techniques-for-finding-and-fixing-bugs-2lf5	Debugging JavaScript Like a Pro Tools and Techniques for Finding and Fixing Bugs IntroductionJavaScript is a powerful programming language used to create interactive web pages and dynamic user interfaces However like any programming language JavaScript code can contain bugs that can cause unexpected behavior errors or crashes and most important of all can turn your life into a living hell Then comes debugging which is the process of finding and fixing these bugs and it is an essential skill for any JavaScript developer So in this article we re gonna discuss some tools and techniques that can help you debug JavaScript like a pro so that you can live a bug free life Browser ConsoleThe browser console is a built in debugging tool that is available in most modern web browsers It allows you to view and interact with the JavaScript code that is running on a web page and it provides tools for debugging and error reporting To open the console simply right click on a web page and select Inspect or Inspect Element Then navigate to the Console tab In the console you can view and interact with the JavaScript code on the current page including variables functions and objects You can also log messages and errors using the console log and console error functions respectively These messages can help you track the flow of your code and identify where bugs might be occurring Conditional breakpointsConditional breakpoints are a powerful debugging tool that allows developers to pause code execution only when a specific condition is met This is particularly useful when debugging loops or functions that are called multiple times For example suppose we have a loop that s iterating over an array of objects and we want to pause the code execution only when the value of a specific property is a certain value By adding a conditional breakpoint that checks the value of the property we can quickly find the problematic code DebuggersGenerally Console log is any developer s favorite debugger right But guess what We have special debuggers too A debugger is a powerful tool that allows you to step through your code and inspect its state at different points in time This can help you identify bugs that might be occurring at specific points in your code or that might be caused by interactions between different parts of your code Most modern web browsers include a built in debugger that can be accessed through developer tools To use the debugger simply open the developer tools navigate to the Sources tab and select the JavaScript file you want to debug Then set breakpoints in your code by clicking on the line number where you want the debugger to stop When the code reaches a breakpoint the debugger will pause execution and allow you to inspect the state of your code Use a LinterAnother essential as a JavaScript developer is a linter It s a tool that analyzes your code for errors style violations and other issues It can help you identify bugs that might be caused by incorrect syntax misspelled variable names or other common mistakes Linters can also help you enforce coding standards and best practices which can improve the overall quality and readability of your code There are many JavaScript linters available including JSLint ESLint and JSHint These tools can be integrated into your development environment or build process and they can be configured to match your coding standards and preferences ProfilersA profiler is a tool that helps you analyze the performance of your code It can help you identify slow or resource intensive functions identify memory leaks and optimize your code for better performance Profilers can also help you identify bugs that might be caused by inefficient algorithms or other performance related issues Most modern web browsers include a built in profiler that can be accessed through developer tools To use the profiler simply open the developer tools navigate to the Performance tab and start a profiling session Then interact with your web page or application as you normally would and the profiler will record and analyze the performance of your code Pretty handy right Testing frameworksTesting frameworks such as Jest Mocha and Jasmine can be used to write unit tests for your JavaScript code These frameworks allow you to write test cases to verify the expected behavior of your code By running these tests you can quickly identify if any code changes have caused unexpected behavior or introduced new bugs For example if you have a function that takes two numbers and returns their sum you can write a test case to ensure that the function returns the correct result for different input values If you modify the function and it no longer passes the test you know that the changes have introduced a bug Testing frameworks can also help you catch errors earlier in the development process making debugging easier and faster Additionally these frameworks can help you ensure that your code meets certain quality standards and remains reliable and maintainable over time Error Tracking ServicesError tracking services such as Sentry and Rollbar can be used to track errors and exceptions in your JavaScript code in real time These services provide a detailed log of errors including information such as the error message stack trace and the line number where the error occurred By monitoring these logs you can quickly identify and diagnose errors as they occur allowing you to fix them before they impact your users These services can also help you identify recurring errors and track their frequency making it easier to prioritize and fix the most critical issues Call Stack InspectionThe call stack is a data structure that keeps track of the execution of a program It records the sequence of function calls that led to the current execution point When an error occurs in the code inspecting the call stack can help identify the source of the error In JavaScript developers can use the browser s built in developer tools to inspect the call stack These tools provide a call stack view along with the error message The call stack can also be logged to the console using the console trace function which prints a trace of the function calls that led to the current execution point Live EditingLive editing is a debugging technique that allows developers to modify the code while it is running This can be useful in cases where the problem cannot be reproduced in a development environment or when the developer wants to see the impact of changes in real time One popular tool for live editing in JavaScript is the Chrome DevTools With DevTools developers can edit the code in the Sources tab and see the changes applied immediately in the browser This can be useful for experimenting with different solutions or quickly testing changes to the code Another tool for live editing is the Node js debugger This allows developers to debug their code from the command line and make changes to the code while it is running The debugger can be started with the inspect flag and accessed through the Chrome DevTools Code ReviewCode review is an important method for debugging JavaScript because it allows multiple developers to work on a codebase together and catch errors early in the development process Code review can take many different forms but generally involves several people examining a codebase and looking for problems This can be done through a variety of methods such as Pair programming Two developers work together on the same codebase with one developer writing code while the other reviews it in real time This allows for immediate feedback and correction of errors Manual code review One or more developers read through the codebase looking for errors inconsistencies and opportunities to improve the code This can be done manually using tools like text editors or specialized code review software Automated code review Developers use tools that analyze code for common errors such as syntax errors variable misuse or performance issues These tools can be integrated into a continuous integration pipeline to automatically catch issues before they reach production Some best practices for effective code review include Establish clear guidelines Make sure everyone knows what the code review process entails including the roles of reviewers and the criteria for success Focus on specific issues Rather than trying to review everything at once focus on specific issues like performance security or maintainability Use tools to assist Utilize code review tools such as linters static analyzers or IDE plugins to automate the process and improve consistency Encourage feedback and communication Make sure reviewers can communicate with each other and the code author asking questions and providing suggestions for improvement Prioritize code review Make code review a regular part of the development process rather than an afterthought to catch errors early and ensure high quality code ConclusionDebugging JavaScript code can be a challenging task but with the right tools and techniques it can also be a rewarding one Overall the key to effective JavaScript debugging is to use a combination of these different methods and tools depending on the nature of the bug and the context in which it occurs Whether you are a beginner or an experienced developer mastering the art of debugging is an essential skill for success in the world of JavaScript development Let s connect TwitterGithub	2023-02-25 12:19:36
Apple	AppleInsider - Frontpage News	Adonit Star review: Effective and elegant Apple Pencil replacement	https://appleinsider.com/articles/23/02/25/adonit-star-review-effective-and-elegant-apple-pencil-replacement?utm_medium=rss	Adonit Star review Effective and elegant Apple Pencil replacementThe Adonit Star is a stylus made for iPad fashioned after a fountain pen giving a classic feel to your tablet experience To the undiscerning eye the Star looks like a fountain pen right down to the details in the pen feed When compared to an actual pen like the TWSBI Eco it has nearly the same length and weight to it showing admirable attention to detail The pen cap and clip alongside its jet black color keep it low profile and accessible in pockets or bags as well Read more	2023-02-25 12:25:43
海外ニュース	Japan Times latest articles	Thai farmers tap into sustainable rubber industry	https://www.japantimes.co.jp/news/2023/02/25/asia-pacific/thailand-rubber-plantations/	Thai farmers tap into sustainable rubber industryThe vast majority of Thailand s rubber plantations are still worked conventionally but a few farmers are abandoning pesticides to try and lessen their impact on	2023-02-25 21:00:38
ニュース	BBC News - Home	Omagh police shooting: Events being held for John Caldwell	https://www.bbc.co.uk/news/uk-northern-ireland-64757611?at_medium=RSS&at_campaign=KARANGA	sports	2023-02-25 12:14:44
ニュース	BBC News - Home	Thousands of tattooed inmates pictured in El Salvador mega-prison	https://www.bbc.co.uk/news/world-latin-america-64770716?at_medium=RSS&at_campaign=KARANGA	members	2023-02-25 12:33:30
ニュース	BBC News - Home	Stafford MP deselected one week after maternity leave return	https://www.bbc.co.uk/news/uk-england-stoke-staffordshire-64766691?at_medium=RSS&at_campaign=KARANGA	clarke	2023-02-25 12:43:37