投稿時間:2022-10-15 17:10:05 RSSフィード2022-10-15 17:00 分まとめ(13件)

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js	JavaScriptタグが付けられた新着投稿 - Qiita	【Vite】テストが自動終了しない！！！	https://qiita.com/Naoumi1214/items/962b072fca82931747a7	通り	2022-10-15 16:49:32
Linux	Ubuntuタグが付けられた新着投稿 - Qiita	dotnet-sdkがうまくインストールされなかったら、、、	https://qiita.com/osawa-koki/items/75bf0dcff36883e8544f	eloadedpossiblybecauseyo	2022-10-15 16:24:15
AWS	AWSタグが付けられた新着投稿 - Qiita	NLBのターゲットとしてALBを指定し、ALBでTLS終端させる	https://qiita.com/quryu/items/05a7dabf021fac06ab53	記事	2022-10-15 16:38:00
海外TECH	DEV Community	Go Tricolor Algorithm Explained	https://dev.to/mavensingh/go-tricolor-algorithm-explained-1588	Go Tricolor Algorithm ExplainedIn this article we are going to learn about how tricolor algorithm works and it s process of working The operation of the Go garbage collector is based on the tricolor algorithm Please not that the tricolor algorithm is not unique to Go and can be used in other programming languages Strictly speaking the official name for the algorithm used in Go is the tricolor mark and sweep algorithm It can work concurrently with the program and uses a writer barrier This means that when a Go program runs the Go scheduler is responsible for the scheduling of the application and the garbage collector This is as if the Go scheduler has to deal with a regular application with multiple goroutines The core idea behind this algorithm came from Edsger W Dijkstra Leslie Lamport A J Martin C S Scholten and E F M Steffens and was first illustrated in a paper named On the Fly Garbage Collection An Exercise in Cooperation The primary principle behind the tricolor mark and sweep algorithms is that it divides the objects of the heap into three different sets according to their color which is assigned by the algorithm It is now time to talk about the meaning of each color set This objects of the black set are guaranteed to have pointers to any object of the white set However an object of the white set can have pointer to an object of the black set because this has not effect on the operation of the garbage collector The objects of the gray set might have pointes to some objects of the white set Finally The objects of the white set are the candidates for garbage collection Please not that no object can go directly from the black set to the white set which allows the algorithm to operate and be able to clear the objects on the white set Additionally no object of the black set can directly point to an object of the white set So when the garbage collection begins all objects are white and the garbage collector visits all the root objects and colors them gray The roots are the objects that can be directly accessed by the application which includes global variables and other things on the stack These objects mostly depend on the Go code of a particular program After that the garbage collector picks a gray object makes it black and starts looking at whether that object has pointers to other objects of the white set This means that when a gray object is being scanned for pointers to other objects it is colored black If that scan discovers that this particular object has one or more pointers to a white object it puts that white object in the gray set This process keeps going for as long as there exist objects in the gray set After that the objects in the white set are unreachable and their memory space can be refused Therefore at this point the elements of the white set are said to be garbage collected Please note that if an object of the gray set becomes unreachable at some point in a garbage collection cycle it will not be collected at this garbage collection cycle but in the next one Although this is not an optimal situation it is not that bad During this process the running application is called the mutator The mutator runs a small function names write barrier which is executed each time a pointer in the heap is modified If the pointer of an object in the heap is modified which means that this object is now reachable the write barrier colors it gray and puts it in the gray setThe mutator is responsible for the invariant that no element of the black set has a pointer to an element of the white set This is accomplished with the help of the write barrier function Failing to accomplish this invariant will ruin the garbage collection process and will most likely crash your program in a pretty bad and undesirable way Go garbage collection can also be applied to variables such as channels When the garbage collector finds out that a channel is unreachable which is when the channel variable cannot be accessed anymore it will free its resources even if the channel has not been closed Go allows you to manually initiate garbage collection by putting a runtime GC statement in your Go code However have in mind that runtime GC will block the caller and it might block the entire program especially if you are running a very busy Go program with many objects This mainly happens because you cannot perform garbage collections while everything else is rapidly changing as this will not give the garbage collector the opportunity to clearly identify the members of the white black and gray sets This garbage collection status is called a garbage collection sage point Note that the Go garbage collector is always being improved by the Go team They are trying to make it faster by lowering the number of scans it needs to perform over the data of the three sets However despite the various optimizations the general idea behind the algorithm remains the same myblog Thanks for reading	2022-10-15 07:49:23
海外TECH	Engadget	Apple Store workers in Oklahoma City vote to unionize	https://www.engadget.com/second-apple-store-to-unionize-oklahoma-city-070056192.html?src=rss	Apple Store workers in Oklahoma City vote to unionizeThe Apple Store workers who d been planning to unionize since at least early this year have come long way from using encrypted chats to organize in secret In June an Apple Store in Maryland became the first location to unionize in the US Now another retail location in Oklahoma City has voted in favor of unionization becoming the second Apple Store in the US to organize officially According to The Wall Street Journal the group is calling itself the Penn Square Labor Alliance because the store is located at Oklahoma City s Penn Square Mall Around employees are eligible for union membership in the store Based on the information released by the National Labor Relations Board of those workers voted in favor of forming a union while voted against The group is now planning to join the Communications Workers of America which also represents workers from companies like AT amp T and Verizon Charity Lassiter an employee at the Oklahoma City store and a member of the organizing committee told The Journal quot Now that we ve won the election it is our hope that management will come to the table so that we may collectively work towards building a company that prioritizes workers over profit and encourages employees to thrive quot Meanwhile an Apple spokesperson told the publication in a statement quot We believe the open direct and collaborative relationship we have with our valued team members is the best way to provide an excellent experience for our customers and for our teams We re proud to provide our team members with strong compensation and exceptional benefits quot Previous reports indicate that Apple has been finding ways to dissuade workers to unionize Just a few days ago Bloomberg reported that the tech giant is offering its employees new perks such as additional health benefits and funding for educational opportunities However the tech giant will reportedly withhold those benefits from unionized members who ll now have to negotiate for them Back when talks about worker s organizing efforts started heating up the company reportedly armed its managers with anti union talking points Employees formally accused the tech giant of union busting and the NLRB found merit in the claims that Apple surveilled staff limited access to pro union fliers and help captive audience meetings to deliver its anti union messaging A hearing is scheduled to take place in December before an NLRB judge unless all parties involved agree on a settlement nbsp	2022-10-15 07:00:56
海外ニュース	Japan Times latest articles	Japan vows ‘bold action’ — if needed — after 32-year yen low	https://www.japantimes.co.jp/news/2022/10/15/business/financial-markets/japan-yen-dollar-concerns/	official	2022-10-15 16:57:20
海外ニュース	Japan Times latest articles	Singapore’s reopening boom draws big money and bubble fears	https://www.japantimes.co.jp/news/2022/10/15/business/singapore-reopening-bubble-fears/	Singapore s reopening boom draws big money and bubble fearsAs the government mints new long term visas to attract more high paid talent it faces a delicate balancing act to keep its people happy as the	2022-10-15 16:48:46
海外ニュース	Japan Times latest articles	Hanshin Tigers to make Shintaro Fujinami available for potential move to MLB	https://www.japantimes.co.jp/sports/2022/10/15/baseball/japanese-baseball/shintaro-fujinami-tigers-mlb-posting/	Hanshin Tigers to make Shintaro Fujinami available for potential move to MLBFujinami has clocked kph with his fastest pitch and was considered the pitching rival of Los Angeles Angels two way star Shohei Ohtani during high	2022-10-15 16:20:04
海外ニュース	Japan Times latest articles	United States crush Japan 30-17 to keep quarterfinal hopes alive	https://www.japantimes.co.jp/sports/2022/10/15/rugby/japan-womens-rugby-loss/	United States crush Japan to keep quarterfinal hopes aliveMegumi Abe Hinano Nagura and Komachi Imakugi crossed for the Japanese who were thrashed by Canada in their opener and have not won a World	2022-10-15 16:13:25
北海道	北海道新聞	上川管内３６６人感染　旭川市は２６９人　新型コロナ	https://www.hokkaido-np.co.jp/article/745827/	上川管内	2022-10-15 16:15:00
北海道	北海道新聞	ロ軍苦戦、併合地域の維持困難も　ヘルソン州、ウクライナ軍が前進	https://www.hokkaido-np.co.jp/article/745826/	苦戦	2022-10-15 16:01:00
北海道	北海道新聞	山車にひかれ男性死亡、愛知　豊田の「挙母祭り」	https://www.hokkaido-np.co.jp/article/745825/	愛知県豊田市十塚町	2022-10-15 16:01:00
ニュース	Newsweek	ドローン同士の一騎打ち...ウクライナ東部「空の決闘」動画が話題に	https://www.newsweekjapan.jp/stories/world/2022/10/post-99864.php	ドローン同士の一騎打ちウクライナ東部「空の決闘」動画が話題にウクライナ軍とロシア軍のドローンが、空中で対戦している様子を捉えたという動画がインターネット上に公開され、注目を集めている。	2022-10-15 16:24:00