投稿時間:2022-02-04 20:37:52 RSSフィード2022-02-04 20:00 分まとめ(42件)

カテゴリー等	サイト名等	記事タイトル・トレンドワード等	リンクURL	頻出ワード・要約等/検索ボリューム	登録日
TECH	Engadget Japanese	どこでも何気なく録音可能。多機能カード型ボイスレコーダー「Samicon K3」	https://japanese.engadget.com/samicon-k3-105014544.html	「SamiconK」ストラップおよびカードケースが付いているので、ICカードなどと一緒にすれば、ボイスレコーダーの持ち忘れや紛失を防ぐことにもつながります。	2022-02-04 10:50:14
TECH	Engadget Japanese	ソニーのVLOGCAM「ZV-E10」は動画も写真も"ちょうどいい"相棒	https://japanese.engadget.com/zv-e-10-103034590.html	ソニーのVLOGCAM「ZVE」は動画も写真もquotちょうどいいquot相棒外出することが極端にへった年からの生活において、日常的に使うデジカメを買い替えないしは買い足しすることが劇的に減りました。	2022-02-04 10:30:34
TECH	Engadget Japanese	香川県のバス・フェリー・ホテルがヤドンに染まります	https://japanese.engadget.com/pokemon-kagawa-100050652.html	株式会社ポケモン	2022-02-04 10:00:50
IT	ITmedia 総合記事一覧	[ITmedia News] DAZNとミクシィが共同でNFT事業スタート　試合映像や名場面を販売	https://www.itmedia.co.jp/news/articles/2202/04/news160.html	itmedianewsdazn	2022-02-04 19:15:00
IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 「DAZN」、NFTに今春参入へ　ミクシィとマーケットプレイス共同運営	https://www.itmedia.co.jp/business/articles/2202/04/news156.html	daznjapaninvestment	2022-02-04 19:13:00
python	Pythonタグが付けられた新着投稿 - Qiita	集え！ワンライナーWordle選手権！	https://qiita.com/Cartelet/items/b560f96130e2dc74edad	requestsは準標準ライブラリといっても良いのではないかと勝手に思っているので使用してしまっています。	2022-02-04 19:51:01
python	Pythonタグが付けられた新着投稿 - Qiita	多項式回帰の実装	https://qiita.com/_kta/items/12e23ca0d029f242f624	aileftarrowaietafracpartialEpartialai誤差Eのaiによる偏微分fracpartialEpartialaiは下記の流れで求めることができる。	2022-02-04 19:32:52
js	JavaScriptタグが付けられた新着投稿 - Qiita	【JavaScript】データの型と少し向き合ってみる	https://qiita.com/Kwt85__/items/1955e76f9b34a25b8283	型ラッパーオブジェクト論理型Boolean数値型Number長整数型BigInt文字列型Stringシンボル型Symbolつまり、先ほどのコード例でプリミティブ型のデータに対してメソッドが使用出来ていたのは、consttextIliveinTokyoここの部分がconsttextnewStringIliveinTokyo「お、プリミティブ型のデータにメソッド使いたいの使えるようにStringオブジェクトにしておくねー」という風に、JavaScript側で自動変換されていたからなんですね。	2022-02-04 19:02:50
Git	Gitタグが付けられた新着投稿 - Qiita	[Git]不要なリモートブランチをコマンド+ちょっと手動で一括削除する	https://qiita.com/Kosei-Yoshida/items/9cd1e79e25def858f4bf	今回のgitpushコマンドのような引数をつ受け取るコマンドの場合は、同じコマンドが行数分実行されます。	2022-02-04 19:24:24
技術ブログ	Developers.IO	TerraformでDNSレコード,ACM証明書,ALBをプロビジョニングする際に入れておいたほうが良いコード	https://dev.classmethod.jp/articles/dnsrecord-acm-alb-with-terraform/	https	2022-02-04 10:21:49
技術ブログ	Yahoo! JAPAN Tech Blog	【Day2資料公開】Yahoo! JAPAN Tech Conferenceへのご参加ありがとうございました #yjtc	https://techblog.yahoo.co.jp/entry/2022020430257970/	yahoojapantechconference	2022-02-04 20:00:00
海外TECH	DEV Community	Concurrency in modern programming languages: Rust vs Go vs Java vs Node.js vs Deno	https://dev.to/deepu105/concurrency-in-modern-programming-languages-rust-vs-go-vs-java-vs-nodejs-vs-deno-36gg	Concurrency in modern programming languages Rust vs Go vs Java vs Node js vs DenoOriginally published at deepu tech This is a multi part series where I ll discuss concurrency in modern programming languages I will be building and benchmarking a concurrent web server inspired by the example from the Rust book in popular languages like Rust Go JavaScript NodeJS TypeScript Deno Kotlin and Java to compare concurrency and its performance between these languages platforms The chapters of this series are as below IntroductionConcurrent web server in RustConcurrent web server in GolangConcurrent web server in JavaScript with NodeJSConcurrent web server in TypeScript with DenoConcurrent web server in Java with JVMComparison and conclusion of benchmarks What is concurrencyConcurrency is one of the most complex aspects of programming and depending on your language of choice the complexity can be anywhere from that looks confusing to what black magic is this Concurrency is the ability where multiple tasks can be executed in overlapping time periods in no specific order without affecting the final outcome Concurrency is a very broad term and can be achieved by multi threading parallelism and or asynchronous processing First I suggest you read the introduction post to understand this post better Benchmarking amp comparisonIn the previous posts I built a simple web server in Rust Go Node js Deno and Java I kept it as simple as possible without using external dependencies as much as possible I also kept the code similar across languages In this final post we will compare the performance of all these implementations to see which language offers the best performance for a concurrent web server If the language supports both asynchronous and multi threaded concurrency we will try both and a combination of both and pick the best performer for the comparison The complexity of the application will hence depend on language features and language complexity We will use whatever the language provides to make concurrency performance as good as possible without over complicating stuff The web server will just serve one endpoint and it will add a sleep of two seconds on every tenth request This will simulate a more realistic load IMO We will use promises thread pools and workers if required and if the language supports it We won t use any unnecessary I O in the application Disclaimer I m not claiming this to be an accurate scientific method or the best benchmark for concurrency I m pretty sure different use cases will have different results and real world web servers will have more complexity that requires communication between concurrent processes affecting performance I m just trying to provide some simple base comparisons for a simple use case Also my knowledge of some languages is better than others hence I might miss some optimizations here and there So please don t shout at me If you think the code for a particular language can be improved out of the box to enhance concurrency performance let me know If you think this benchmark is useless well please suggest a better one All the implementations used in this comparison can be found in this GitHub repository Benchmarking conditionsThese will be some of the conditions I ll be using for the benchmark The latest stable release versions of language runtimes available are used and as of writing those are Rust StableGo Java OpenJDK Node js Deno We will be using external dependencies only if that is the standard recommended way in the language latest versions of such dependencies as of writing will be usedWe are not going to look at improving concurrency performance using any configuration tweaksWe will use ApacheBench for the benchmarks with the below settings Concurrency factor of requests total requestsThe benchmark will be done ten times for each language with a warmup round and the mean values will be used ApacheBench version on Fedora httpd tools fc x Command used ab c n http localhost All the benchmarks are run on the same machine running Fedora on an Intel i H core thread processor with GB memory Comparison parametersI ll be comparing the below aspects related to concurrency as well Performance based on benchmark resultsCommunity consensusEase of use and simplicity especially for complex use casesExternal libraries and ecosystem for concurrency ConclusionBased on the benchmark results these are my observations Benchmark resultsThe average values for different metrics across ten benchmark runs are as below As you can see there isn t any significant difference between the languages when it comes to total time taken for k requests which means for a real world use case the language choice isn t going to be a huge factor for concurrency performance But of course if you want the best possible performance then Rust clearly is faster than other languages as it gives you the highest throughput followed by Java and Golang JavaScript and TypeScript are behind them but not by a considerable margin The Go version using the built in HTTP server is the slowest of the bunch due to inconsistent performance across runs probably due to garbage collection GC kicking in causing spikes Also interesting is to see the difference between the multi threaded and asynchronous approaches While for Rust multi threaded implementation performs the best by a slight margin the asynchronous version performs slightly better for Java and JavaScript But none of the differences is significant enough to justify suggesting one approach over another for this particular case But in general I would recommend using the asynchronous approach if available as it s more flexible without some of the limitations you might encounter with threads Here are the best results out of all the runs You can find the results used in the GitHub repo Community concensusThe community consensus when it comes to concurrency performance is quite split For example both Rust and Go communities claim to be the best in concurrency performance From personal experience I find them relatively close in performance with Rust having a slight lead over Go The Node js ecosystem was built over the promise of asynchronous concurrency performance and there are testimonials of huge performance improvements when switching to Node js Java also boasts of real world projects serving millions of concurrent requests without any issues hence it s hard to take a side here Another general observation is that Rust was quite consistent in terms of performance across runs while all other languages had some variance especially when GC kicks in SimplicityWhile performance is quite similar between different languages and implementations ease of use and simplicity is a whole different matter I think it s also important to differentiate between asynchronous and multi threaded approaches Asynchronous I personally find Node js and Deno the simplest and easy to use platforms for async concurrency Golang would be my second choice as it s also easy to use and simple without compromising on features or performance Rust follows it as it is a bit more complex as it has more features and needs getting used to I would rate Java last as it requires much more boilerplate and doing asynchronous programming is more complex than in others I hope project Loom fixes that for Java Multi threaded For multi threaded concurrency I will put Rust first as it s packed with features and doing multi threading is easy and worry free in Rust I ll put Java second here as it has a mature ecosystem for multi threading and is not too difficult to use Go is very easy to use but you don t have a lot of control over OS threads else I would rate Go higher than Java Finally there are multi threading capabilities in Node js and Deno but they are not as flexible as other languages hence I ll put them last EcosystemRust has the best ecosystem for concurrency in my opinion followed by Java and Golang which have matured options Node js and Deno while not as good as others offers a descent ecosystem as wellIf you like this article please leave a like or a comment You can follow me on Twitter and LinkedIn	2022-02-04 10:11:52
海外TECH	DEV Community	Day 90 of 100 Days of Code & Scrum: Overlooked Styling Bugs	https://dev.to/rammina/day-90-of-100-days-of-code-scrum-overlooked-styling-bugs-2g1o	Day of Days of Code amp Scrum Overlooked Styling BugsGreetings everyone Today I fixed some styling bugs on the portfolio section of my business site It s kind of funny that I didn t catch this for a month because it was at a very narrow breakpoint range around a width of px px that I just overlooked Oh well at least it s fixed now and I also made some styling improvements for the blog section and then added it to the homepage as well Anyway let s move on to my daily report YesterdayI did a lot of code cleaning and refactoring plus I also learned more Next js and SQL Today Company Websitefixed some styling bugs on the portfolio section add blog posts section on the homepage only displays items improve the styling of blog post items and portfolio items Next jslearned about authentication in Next js continued going through Next js amp React by Maximilian Schwarzmüller SQLlearned about self JOIN continued to go through SQLZoo s SQL Tutorial Scrumstarted reading the Nexus guide for scaling Scrum Thank you for reading Have a good day Resources Recommended ReadingsNext js amp React by Maximilian SchwarzmüllerNext js official documentationSQLZoo s SQL TutorialThe Scrum GuideNexus guide DISCLAIMERThis is not a guide it is just me sharing my experiences and learnings This post only expresses my thoughts and opinions based on my limited knowledge and is in no way a substitute for actual references If I ever make a mistake or if you disagree I would appreciate corrections in the comments Other MediaFeel free to reach out to me in other media	2022-02-04 10:11:03
Apple	AppleInsider - Frontpage News	Apple cuts commission by 3% for Dutch apps using third-party payments	https://appleinsider.com/articles/22/02/04/apple-cuts-commission-by-3-for-dutch-apps-using-third-party-payments?utm_medium=rss	Apple cuts commission by for Dutch apps using third party paymentsFollowing changes to the App Store to comply with the Netherlands law Apple has revealed that it will cut its commission to for eligible apps Apple intends to continue disputing the Netherlands ruling that says it has to allow the developers of dating apps to provide alternative payment methods However it is complying with the order and having first detailed how developers can use third party systems has now revealed its fees Read more	2022-02-04 10:59:14
Apple	AppleInsider - Frontpage News	Apple TV+ picks up five Bafta film nominations	https://appleinsider.com/articles/22/02/03/apple-tv-picks-up-four-bafta-film-nominations?utm_medium=rss	Apple TV picks up five Bafta film nominationsThe UK s equivalent of the Oscars has announced five nominations for Apple TV movies including three for CODA More than doubling its film nominations Apple TV is now competing in five Bafta categories ranging from writing to casting Bafta has recognized two Apple movies with CODA gaining nominations in the major categories Read more	2022-02-04 10:04:04
海外ニュース	Japan Times latest articles	Kishida and new U.S. envoy affirm importance of alliance at first meeting	https://www.japantimes.co.jp/news/2022/02/04/world/fumio-kishida-rahm-emanuel/	Kishida and new U S envoy affirm importance of alliance at first meetingDuring the meeting at his office Kishida said the appointment of Rahm Emanuel who is greatly trusted by U S President Joe Biden symbolizes the ironclad	2022-02-04 19:42:33
海外ニュース	Japan Times latest articles	Olympic delegations should side with Taiwan and leave their national flags at home	https://www.japantimes.co.jp/opinion/2022/02/04/commentary/world-commentary/taiwan-olympic-dilemma/	Olympic delegations should side with Taiwan and leave their national flags at homeAlthough the Olympic Charter forbids discrimination the International Olympic Committee bans the Taiwanese from expressing their national identity even after a hard earned victory	2022-02-04 19:36:17
海外ニュース	Japan Times latest articles	Russia’s likely invasion route	https://www.japantimes.co.jp/opinion/2022/02/04/commentary/world-commentary/russian-ukraine-invasion/	capabilities	2022-02-04 19:17:53
海外ニュース	Japan Times latest articles	Southeast Asia’s should prepare for a new cold war	https://www.japantimes.co.jp/opinion/2022/02/04/commentary/world-commentary/southeast-asia-cold-war/	china	2022-02-04 19:15:31
海外ニュース	Japan Times latest articles	Why mountain communities need the Winter Games	https://www.japantimes.co.jp/opinion/2022/02/04/commentary/japan-commentary/mountain-communities-need-winter-games/	communities	2022-02-04 19:14:22
ニュース	BBC News - Home	Boris Johnson rocked by wave of No 10 resignations	https://www.bbc.co.uk/news/uk-politics-60253231?at_medium=RSS&at_campaign=KARANGA	leadership	2022-02-04 10:54:44
ニュース	BBC News - Home	DUP: Donaldson says Executive return 'difficult' if NI Protocol remains	https://www.bbc.co.uk/news/uk-northern-ireland-60254257?at_medium=RSS&at_campaign=KARANGA	protocol	2022-02-04 10:27:14
ニュース	BBC News - Home	Boris Johnson makes incorrect claim on jobs	https://www.bbc.co.uk/news/60245483?at_medium=RSS&at_campaign=KARANGA	regulator	2022-02-04 10:44:35
LifeHuck	ライフハッカー［日本版］	【Amazonタイムセール中！】Ankerの高音質Bluetoothスピーカーが15％オフ、メガネくもり止めクロスが682円など	https://www.lifehacker.jp/article/5ecca14d-036e-4963-888d-698c5c4a954eamazon-timesale-0204-1/	amazon	2022-02-04 10:30:00
北海道	北海道新聞	日本代表西大伍、コンサドーレ札幌に復帰　１３年ぶり	https://www.hokkaido-np.co.jp/article/641978/	元日本代表	2022-02-04 19:19:05
北海道	北海道新聞	立春に搾りたての「縁起酒」　全国４３蔵、約２７万本出荷	https://www.hokkaido-np.co.jp/article/641940/	立春朝搾り	2022-02-04 19:03:11
北海道	北海道新聞	香港、国安法違反で活動家逮捕　五輪巡り抗議計画か	https://www.hokkaido-np.co.jp/article/641988/	香港	2022-02-04 19:12:00
北海道	北海道新聞	灯油高直撃、実習生の確保不透明　夕張メロン「ブランド守る」　種まき始まる	https://www.hokkaido-np.co.jp/article/641987/	夕張メロン	2022-02-04 19:12:00
北海道	北海道新聞	ＪＦＬ昇格へ始動　芽室スカイアースが初練習	https://www.hokkaido-np.co.jp/article/641986/	北海道十勝スカイアース	2022-02-04 19:11:00
北海道	北海道新聞	伊藤詩織さん側が上告　名誉毀損認定に不服	https://www.hokkaido-np.co.jp/article/641985/	精神的苦痛	2022-02-04 19:11:00
北海道	北海道新聞	道内の薬用植物に興味持って　道がセミナー開催	https://www.hokkaido-np.co.jp/article/641983/	薬用植物	2022-02-04 19:11:00
北海道	北海道新聞	ミャンマーの素顔　写真に　農業指導２年　帯広の佐藤さん、市内で展示	https://www.hokkaido-np.co.jp/article/641982/	東南アジア	2022-02-04 19:10:00
北海道	北海道新聞	倶知安の野山歩き自然美など表現　９１歳徳丸さん絵日記集　２００部作製	https://www.hokkaido-np.co.jp/article/641981/	野山	2022-02-04 19:09:00
北海道	北海道新聞	中国の新疆、装甲車出動で緊張　ウイグル族「五輪は見ない」	https://www.hokkaido-np.co.jp/article/641980/	人権侵害	2022-02-04 19:08:00
北海道	北海道新聞	長万部養殖ホタテ、命名を　アイヌブランド化推進協議会　発信力向上へ６候補	https://www.hokkaido-np.co.jp/article/641979/	養殖	2022-02-04 19:07:00
北海道	北海道新聞	函館・西部地区の魅力　俳句ポスターに　未来大生ら作製　市電内に展示	https://www.hokkaido-np.co.jp/article/641977/	魅力	2022-02-04 19:03:00
仮想通貨	BITPRESS（ビットプレス）	[日経] 三井物産、金連動の暗号資産　価格変動緩やか	https://bitpress.jp/count2/3_9_13043	三井物産	2022-02-04 19:39:05
IT	週刊アスキー	『ソフィーのアトリエ2』のソフィーが「元気回復 秋葉原電気街まつり」のイメージキャラクターに決定！	https://weekly.ascii.jp/elem/000/004/082/4082635/	発売予定	2022-02-04 19:55:00
IT	週刊アスキー	『オクトパストラベラー 大陸の覇者』新章のビジュアルが先行公開！2月8日20時より「第2回生放送」も配信決定	https://weekly.ascii.jp/elem/000/004/082/4082631/	octopathtraveler	2022-02-04 19:50:00
IT	週刊アスキー	EENOUR 、大容量&定格出力2000Wのポータブル電源 「P2001」を発売	https://weekly.ascii.jp/elem/000/004/082/4082633/	eenour	2022-02-04 19:30:00
IT	週刊アスキー	レトロモダンなデザインが魅力的なUSBマイク＆レコーダー「Tula Mic」	https://weekly.ascii.jp/elem/000/004/082/4082634/	tulamic	2022-02-04 19:30:00
マーケティング	AdverTimes	空気清浄機の表示に措置命令　大作商事、イトーヨーカドー	https://www.advertimes.com/20220204/article376254/	措置命令	2022-02-04 10:15:56