投稿時間:2021-05-02 09:27:34 RSSフィード2021-05-02 09:00 分まとめ(34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
ROBOT	ロボスタ	IoTスマートホステルで『おそ松さん』コラボルーム登場　客室内におそ松さんが出現するAR体験も	https://robotstart.info/2021/05/02/osomatsusan-hostel.html	andfactory	2021-05-01 23:22:52
IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 国内初！　JALの客室乗務員がタクシーに乗って、出雲市をガイド	https://www.itmedia.co.jp/business/articles/2105/02/news013.html	itmedia	2021-05-02 08:18:00
IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 「夜入稿で朝納品」時差を活用したアウトソーシング　外資コンサルの仕組みをサービス化	https://www.itmedia.co.jp/business/articles/2105/02/news014.html	itmedia	2021-05-02 08:18:00
IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] サントリー「のんある晩酌 レモンサワー ノンアルコール」　約2カ月で1000万本突破	https://www.itmedia.co.jp/business/articles/2105/02/news012.html	itmedia	2021-05-02 08:18:00
TECH	Techable（テッカブル）	コロナ禍の反動？ 2021年第1四半期の世界スマホ出荷台数は27％増、首位はSamsung	https://techable.jp/archives/154016	samsung	2021-05-01 23:00:49
js	JavaScriptタグが付けられた新着投稿 - Qiita	Dogelog Runtime, Prolog to the Moon	https://qiita.com/j4n_bur53/items/17f86429745426bd14fd	Dogelog Runtime Prolog to the MoonWe got recently interested in the JIT ing capabilities of JavaScript So we set sail to write a take on the Albuferia Prolog Interpreter The result is a first cross compiler that compiles Prolog with Cut into JavaScript arrays that can then be executed by the Dogelog runtime The point of departure was the following paper A portable Prolog compilerConference Logic Programming WorkshopAt Albufeira PortugalWilliam Clocksin January The above compiler suggests an instruction set that is based on a register window The instruction is flexible in that it can build fresh Prolog terms and or perform unification During unification it can avoid building unnecessary fresh Prolog terms The compiler goes also into length to compile tail recursion in a smart way We didn t implement this part But we provide a already the cut and a primitive trail garbage collection Built ins on the other hand are not yet provided Cross CompilingThe compiler is currently a cross compiler One needs to use another Prolog system and run the Prolog program through it In the future we might let the browser do that but currently there are the following files that perform the cross compilation Term Compiler term Here we are close to the Albufeira compiler in that we alsouse the instructions var N functor F N atom C and thecharacteristic pop instruction Since we do not have memorypointers in Java Script we use an index into an array to create terms Clause Compiler solve Here we divert from the Albufeira compiler in that we chopup the instruction stream in a Prolog clause head and body part which sit itself in a list This will later simplify theDogelog runtime File Compiler dogelog This is a very rudimentary utility that can produce JavaScriptarray statements that can then be embedded in a HTML page Theutility makes use of Jekejeke Prolog strings which are codedas STR atom Other Prolog systems might need something else From within Jekejeke Prolog the cross compiler can be invoked as follows set prolog flag double quotes string doge examples pl examples js Dogelog RuntimeThe Dogelog runtime needs a full fledged unification Although the Albufeira instruction stream can build and unify Prolog terms it falls back to a unification routine in case two instantiated variables meet The Dogelog runtime consists of Term Handling unify js Can perform unification During unification variables that getinstantiated get recorded on the trail The JavaScript file alsoprovides routines to mark and sweep the trail which is laterused in garbage collection Clause Handling executor js Can solve Prolog goals We use a solver that works on goal list Clauses heads and bodies are difference lists so that the modifythe goal list like in resolution When the trail gets too largegarbage collection is performed When implementing the solver we replicated the Jekejeke Prolog engine with its two modes call and redo This is a loop that fetches goals from the goal list during when in call mode and jumps to choice points when in redo mode TauProlog ComparisonWe were currious how Dogelog compares to TauProlog So we were running Peano factorials which stretches the tail recursion and garbage collection of any Prolog system The test files were TauProlog Benchmark We made ourselfs comfortable with the TauProlog API They required us to code a lot of call backs We realized a logic that did try to execute Peano factorials up to But somehow TauProlog gave silently up at TauProlog Benchmark results are here Dogelog GC Demo The Dogelog API doesn t use inverted programming The Prolog interpreteris viewed as an iterator that can be asked for a next solution TheDoglet runtime is able to reach Prolog factorial in a Chrome browser Dogelog GC Demo results are here Of course we were courious whether Dogelog runtime is a total disaster So we did also some measurement via JavaScript Date now It turns out that the Dogelog runtime fares quite well compared to TauProlog Future OutlookWe are mostly interested in the JIT ing capabilities of JavaScript So we will need a future version of Dogelog that compiles closer to the metal either JavaScript code or even maybe Webassembly code For this project we will have to look again at the many ideas from the Albufeira instruction set	2021-05-02 09:00:11
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	documentByIdがnot functionです。	https://teratail.com/questions/336171?rss=all	documentById が notfunction です 。	2021-05-02 08:55:24
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	JavaScript 開発ツール コンソール 関数を実行されなくするには	https://teratail.com/questions/336170?rss=all		2021-05-02 08:39:38
AWS	AWSタグが付けられた新着投稿 - Qiita	AWSを理解する[webサーバー編]	https://qiita.com/enuii3/items/a68f42563a6331b89db3	本記事に関する用語集Apachewebサーバーソフトウェアのことポートを開けるポートを通すブロックされているポートで通信できるようにすることドメインIPアドレスを人間がわかりやすいようにしたしたものDNSサーバーDomainNameSystemIPアドレスとドメイン名を変換しれくれるもの名前解決DNSを用いて、あるドメイン名からそれに対応するIPアドレスを引き出すことパブリックDNSインターネットから参照できるDNS名プライベートDNSVPC内から参照できるDNS名Route独自ドメイン名を利用するためのAWSのサービス独自ドメインオリジナルのドメインnslookupコマンドサーバーに名前解決させるコマンドwindowsやMacなど多くLinuxのディストリビューションに標準インストールされているdigコマンドDNSサーバーに問い合わせることでドメイン名からIPアドレスを調べるコマンドnslookupコマンドは昔ながらのコマンドで最近のUNIX系の環境ではdigコマンドが使用できるLinuxOSの一種でオープンソースUNIXLinuxはUNIXを参考に作られたと言われており、OSの一種で使用するのにライセンスが必要不可分散サーバーロードバランス並列に運用されている機器間で、負荷がなるべく均等になるように処理を分散して割り当てること。	2021-05-02 08:30:43
AWS	AWSタグが付けられた新着投稿 - Qiita	[AWS ソリューション]Amazon CloudWatch のモニタリングフレームワークを試してみる	https://qiita.com/okubot55/items/a3dbaa53d63f24cea5e6	AWSソリューションAmazonCloudWatchのモニタリングフレームワークを試してみるはじめに本記事では、AWSソリューション実装で提供しているAmazonCloudWatchのモニタリングフレームワークを試してみましたので、その内容について簡単にまとめたものです。	2021-05-02 08:26:20
Linux	CentOSタグが付けられた新着投稿 - Qiita	Centos8 に日本語入力をできるようにする方法	https://qiita.com/takaikeee12/items/ae543024f68a26a9954c	Centosに日本語入力をできるようにする方法背景Centosにて日本語入力ができませんでした。	2021-05-02 08:17:31
海外TECH	DEV Community	What is really the difference between Cookie, Session and Tokens that nobody is talking about ?.	https://dev.to/dev_emmy/what-is-really-the-difference-between-cookie-session-and-tokens-when-it-comes-to-authentication-4164	What is really the difference between Cookie Session and Tokens that nobody is talking about To understand the differnece between cookies sessions and tokens we need to get back on the basis let s say you want to login to your bank account and you are provided with login screen where you can input your username and password and when you hit the submit button your username and password goes to the bank server Then the server need to verify that you are really who you claim to be so the bank will check against the database to see if your credentials match and if everything looks good the server will return your account overview page but will also create a session in the database with your login event and gives back to you the session id inform of a cookie in other words you have exchanged your username and password for this cookie containing the seesion id You send your username and password and then you recieve a cookie with a session id So the server will store the session information in the database while you will only have the session id in the cookie which is stored in the file system of your computer the session id is randomly generated so it would be hard to guess and when you logout the session will be deleted on the server side but also the server will instruct your browser to delete the cookie containing the session id as well Next time when you login and you tend to request a page your browser will automatically send a cookie containing a session id which the server will check to see if it is still valid It is essential to know that the next time your username and password are nolonger required in order to identify you Think of a cookie like your Gym membership card it stores your membershipID additional with other details and when you scan it at the entry it checks if your membership is still valid and let s you in So as like with your gym card a cookie with your session id only works with a specific website like you can not use your gym card to enter office building forexample hte same goes to your cookie you can not use it log into another different website So bank server will keep the session active as long as you keep interacting with the server if for sometimes you are inactive and after that you visit a new page the server will notice this period of inactivity and prompt you to provide your username and password again as a security measure So the approach mentioned above is called a cookie based authentication Accordingly this approach used a session on the server to handle the authentication The cookie is only a medium used to transport the sessionID and it is used because it is convinient the browser will always send a cookie with every request The same goes with membership card It is just convinient to have a card instead of showing you ID everytime but you can probably load the card on your phone and use your phone to get in so the storage has changed but the concept remains the same I mean in this case the bank stores the session information on the server side and you cannot see the contents of it but at the same time it can store othe information on the client side on your browser using another cookie forexample which was the lastpage you visited or what is your preffered font size or color or anyother less sensitive information WHY SERVERS DOES NOT STORE ALOT OF INFORMATION IN THE COOKIES But let s talk about why server doesn t store alot of information in the cookies this is because the cookies cannot be trusted as they are coming from the client this is why servers prefer to work with their databases where ideally only valid infromation exists An alternative to this is to store information on the client and to sign it in this scenario anyone holding the signature can quickly check if the data was manipulated or not and one way to do this is to use JSON WEB TOKENS so basically cookie based authentication has worked really well for many years but it is slowly becoming outdated atleast in some cases Let s say now that you want to install an app on your phone which can help you with your financies and help keep track of your spendings using your bank account information and what you don t want to do is to give your username and password to this app which is not associated with your bank in this case your bank will redirect you to your bank account you will give in your username and password and your bank will ask you hey John would you like to give this app access to your transactions and if you click yes the app will receive a token granting access to your transactions but the app will only view transactions it will not be able to wire transfers or to see other details which you would normally be able to see when you login in your bank account This token is like a randomly generated password if you would wish to say it like when you we re at the hotel and you get a day wifi password Am sure you might have seen a similar procedure to this approach anytime you have used Facebook Google or MicroSoft to grant information for your user profile to a third party website So in this exchange you never exchange you username and password if you later want you can easily revoke access to your bank account by invalidating the token that was generated So one of the most commonly used protocols for such scenario s are both openID Connect but also JON WEB TOKENS SO YOU ARE PROBABLY WONDERING WHAT IS THE DIFFERENCE BETWEEN A TOKEN AND A SESSION STORED IN A COOKIE The difference is that tokens are typically following a standard while sessions are implemented as needed by the server Additionally tokens tend not to need a session on the server but they may have one In the case of JWT tokens the token contain the session information as well it contains actual data about you as a user When using tokens it is essential to notice that now the interaction typically involves multiple parties that may or may not trust one another So you trust your bank with your bank login username and password but you may not trust this third party app that you found in the AppStoreAnother difference is that a token has a limited lifetime and a new token needs to be generated once it expires the technical term is refreshed A token can also grant access to a subset of data a particular user or entity has eg you have only granted access to your transactions but not to other information Most of the time tokens are being sent using HTTP headers and not cookies the reason for that is nowadays many interactions happen out of browsers for example from apps on your phone and it simply does not make sense to use cookies for that Cookies are sent as HTTP headers but the browsers handles them differently than the other headers CONCLUSIONSo both session based cookie based and token based approaches are widespread and typically they are used in parallel for example a session cookie based approach is deployed when using the website but token based approach is preferred when using the app from the same service So it is essential to understand how both work I hope that was useful and now are able to differentiate between cookies sessions and tokens	2021-05-01 23:32:07
海外科学	NYT > Science	How to Watch SpaceX Splashdown With 4 Astronauts	https://www.nytimes.com/2021/05/01/science/nasa-spacex-landing.html	resilience	2021-05-01 23:13:31
海外科学	BBC News - Science & Environment	Then and now: When silence descended over Victoria Falls	https://www.bbc.co.uk/news/science-environment-56902340	natural	2021-05-01 23:10:52
ニュース	@日本経済新聞 電子版	熟練の技、AIが継ぐ　手術や工事向け開発加速 https://t.co/iNwGsOIq8T	https://twitter.com/nikkei/statuses/1388643644198907904	開発	2021-05-01 23:56:59
ニュース	@日本経済新聞 電子版	文書や写真、大切なデータを長く保管するコツは？ https://t.co/P8kMlZMn82	https://twitter.com/nikkei/statuses/1388641612557742082	文書	2021-05-01 23:48:54
ニュース	@日本経済新聞 電子版	自動車生産の急回復を背景に、工場火災などで長引く半導体不足。生産拠点の集中や工場大型化がリスク要因となり、自国内に拠点を戻す動きが出ています。 https://t.co/3MW8sKNtgH	https://twitter.com/nikkei/statuses/1388637799579111426	生産拠点	2021-05-01 23:33:45
ニュース	@日本経済新聞 電子版	インド医療支援本格化　40カ国が酸素や医薬品供給 https://t.co/4XpIoebPME	https://twitter.com/nikkei/statuses/1388635324176166913	医療支援	2021-05-01 23:23:55
ニュース	@日本経済新聞 電子版	引っ越しのサカイ、小型トラック導入　高卒を即戦力に https://t.co/UEbzPd73tK	https://twitter.com/nikkei/statuses/1388631571633119235	引っ越し	2021-05-01 23:09:00
ニュース	BBC News - Home	Covid: Quarantine for Covid contacts could be scrapped	https://www.bbc.co.uk/news/uk-56958885	isolate	2021-05-01 23:20:03
ニュース	BBC News - Home	The man who lives on one of the UK's remotest islands	https://www.bbc.co.uk/news/uk-northern-ireland-56929674	islandsas	2021-05-01 23:11:43
ニュース	BBC News - Home	Sweden's IVF programme for single women not 'as good as hoped'	https://www.bbc.co.uk/news/world-europe-56859427	access	2021-05-01 23:07:30
ニュース	BBC News - Home	Derek Chisora loses heavyweight clash to Parker	https://www.bbc.co.uk/sport/boxing/56959385	chisora	2021-05-01 23:51:47
ニュース	BBC News - Home	Walton-on-the-Naze: 'People are almost panic buying beach huts'	https://www.bbc.co.uk/news/uk-england-essex-56901720	seaside	2021-05-01 23:51:52
ニュース	BBC News - Home	Blossoms singer Tom Ogden: The joy of headlining the UK's first post-lockdown gig	https://www.bbc.co.uk/news/newsbeat-56944509	blossoms	2021-05-01 23:50:58
ニュース	BBC News - Home	Coronavirus: The impact on the deaf community	https://www.bbc.co.uk/news/uk-56913227	community	2021-05-01 23:14:41
ニュース	BBC News - Home	Zero waste bus delivers healthy food to Johannesburg	https://www.bbc.co.uk/news/world-africa-56902188	grocery	2021-05-01 23:01:29
ニュース	BBC News - Home	The young woman trying to adopt her friend	https://www.bbc.co.uk/news/world-europe-56919234	covid	2021-05-01 23:07:27
ニュース	BBC News - Home	Sadiq Khan: 'I never wanted to be a culture war poster boy'	https://www.bbc.co.uk/news/uk-england-london-56866242	donald	2021-05-01 23:53:26
ニュース	BBC News - Home	India Covid-19: Fact-checking misleading claims on oxygen treatments	https://www.bbc.co.uk/news/world-asia-india-56925650	treatments	2021-05-01 23:54:59
サブカルネタ	ラーブロ	横須賀市　第二ひさご寿司　お刺身ご飯　1000円（抜）	http://feedproxy.google.com/~r/rablo/~3/54UgsiQFwbE/single_feed.php	横須賀市	2021-05-02 00:25:06
サブカルネタ	ラーブロ	藤沢市　麺場田所商店　信州味噌味噌漬け炙りチャーシュー麺 990円（抜）	http://feedproxy.google.com/~r/rablo/~3/UMNutxVks8s/single_feed.php	信州味噌	2021-05-02 00:18:47
サブカルネタ	ラーブロ	横浜市都筑区　あびすけ　ラーメン730円	http://feedproxy.google.com/~r/rablo/~3/Fz6jc4LhsK4/single_feed.php	横浜市都筑区	2021-05-02 00:13:00
北海道	北海道新聞	イラン「原油解除で一致」　米の制裁、英仏独は慎重	https://www.hokkaido-np.co.jp/article/539808/	間接	2021-05-02 08:03:56