投稿時間:2021-07-17 07:18:44 RSSフィード2021-07-17 07:00 分まとめ(21件)

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TECH	Engadget Japanese	爆弾ミサイル何でもござれ！妨害アリのはちゃめちゃレース『Boom Karts』：発掘！スマホゲーム	https://japanese.engadget.com/boom-karts-211038556.html	boomkarts	2021-07-16 21:10:38
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	【javascript】チェックボックスを使用した表示の切り替え	https://teratail.com/questions/349908?rss=all	【javascript】チェックボックスを使用した表示の切り替えサイトを参考にしながら、JavaScriptで、Todoリストを作成しています。	2021-07-17 06:56:06
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	[Wordpress]赤枠部分を消したい	https://teratail.com/questions/349907?rss=all	wordpress	2021-07-17 06:09:48
Program	[全てのタグ]の新着質問一覧｜teratail（テラテイル）	Ninjaビルドエラー	https://teratail.com/questions/349906?rss=all	NinjaビルドエラーNinjaを使ったビルドでエラーが発生しています。	2021-07-17 06:07:32
海外TECH	Ars Technica	Finger wrap could one day let you power up wearables while you sleep	https://arstechnica.com/?p=1780902	sweat	2021-07-16 21:41:45
海外TECH	DEV Community	Getting started with Terraform: Remote Backend	https://dev.to/danihuerta/getting-started-with-terraform-remote-backend-4092	Getting started with Terraform Remote BackendIn the previous post we talked about how does Terraform manages the resources in the cloud using the local state file however in the real world we will have to collaborate with other members of the team it is to say that not only one person is going to modify the Terraform files In this scenario does the entire team have to modify the local state file manually in their machine to be all synchronized Well it does not sound so practical When we work in a collaborative workflow it is necessary to use a remote backend which is the same as a remote state file Remote BackendThe Remote Backend is the resource in Terraform that will allows us to store the state file in a remote location not locally as it occurs in TF by default Doing this all the team members that are working with the Terraform files will be able to do it in a synchronized way there will be a unique shared state file for the project placed in a remote location which can be an AWS S Bucket Consul AzureRM etc In this post we are going to use an AWS S Bucket as our remote backend S BackendIf any backend is specified in the code the state will be stored locally Keeping that in mind let s define our first remote backend ‍ To keep our code in a good structure we need to create a file named backend tf you can name it as whatever you want it is just to follow the standard Inside of it we are going to use the next code and then configure it with the command terraform init in the terminal Note that the AWS S Bucket needs to be created in the cloud before running terraform apply otherwise it will show an error because there will not be a bucket to store the remote state file Once the code has been applied you will see that inside of the terraform folder there is a terraform tfstate file However the information about the created resources are not stored there it only specifies that the backend is an S Bucket State LockingNow we are able to work in the same Terraform infrastructure file in a collaborative way however what if while I m modifying a specific resource in the code another member of the team modify the same part as well What changes are the ones that will remain This is a common problem when a team works in the same code the solution of it is the state locking As its name says it is going to block the state during the applying operations such as terraform plan or terraform apply Once we have added the state locking which is also included by default when we use the local state but not in a remote backend if a user is running a terraform apply command for example and another one tries to do it as well at the same time TF will show him an error specifying that the state is currently locked by the changes of a different user avoiding inconveniences in the code To create the state locking with the S Bucket it is necessary to create a DynamoDB and add LockID as primary key Now let s specify to the backend that we are going to use a DynamoDB for our State Locking It is very simple we just need to add the dynamodb table tag To apply this configuration let s run the command terraform init Now we can work with the TF files within the team with the best practices ClosureThis topic can be a little tricky to understand mainly because there are many resources that can be used as Remote Backends however you don t have to be an expert implementing all of them In my case AWS is the CP that I mostly use in my job that s why I m using its resources with Terraform If you have any doubt or comments about it let s discuss it remember we are here to help each other	2021-07-16 21:22:15
海外TECH	DEV Community	JavaScript Demystified: The execution context and the call stack	https://dev.to/saran_chakravarthi/javascript-demystified-the-execution-context-and-the-call-stack-2gka	JavaScript Demystified The execution context and the call stackHello Devs JavaScript demystified is going to be a series of blogs And this is the first one I will try to cover the important yet not well known javascript concepts in this blog series I would like to start off the series by explaining the execution context and the call stack Execution context Execution context may be defined as the environment in which the code gets executed Everything in JavaScript happens inside the execution contextIt is composed of two components the memory component and the code component The memory component The memory component also known as the variable environment stores the variable functions and their values as key value pairs The code component It is also known as the thread of execution Inside the code component the code is executed one line at a time Execution context is created in two phases The first one is memory creation phase in this phase the interpreter skims through the whole program and allocates memory to the variables and functions The second phase is called the code execution phase the code gets executed in this phase Let s visualize this with an example Consider the following program var n function double num return num a double n b double When the program starts to execute a new execution context will be created since we are dealing with global level it is called the global execution context Memory allocation phase On line number one memory is allocated for the variable n and it is assigned with the value undefined You can think of undefined as a special placeholder keyword we will learn more about it in the upcoming blogs Then memory is allocated for double function the whole function is assigned to it as its value Similar to variable n memory is allocated for variables a and b and they are assigned with the value undefined This how the execution context will look like Code execution phase Code is executed line by line firstly the value of n will be replaced with The function definition of double will be skipped as it is just a definition there is nothing to be executed Then we reach the function invocation where double function is called Now something interesting happens a new execution context will be created inside the global execution context s thread of execution The same process will happen to this new execution context as well During the memory creation phase memory will be allocated for num and will be assigned with undefined During the code execution phase the value of num will be replaced by When the program reaches return keyword the control is returned to the function caller along with value specified after the return keyword Then that particular execution context is deleted In our case execution context of double n will be deleted similarly double will also be executed Once the program reaches the end of the file the global execution context will also be deleted The call stack The example we saw was pretty simple But what if we have multiple function invocations inside a function how will JavaScript handle it The answer is call stack It is similar to the stack data structure It follows the LIFO Last In First Out principal Whenever we start a program the global execution context is pushed into to the stack After that if we call a function it is pushed into the stack Once the code reaches the return statement the function gets popped off the stack The global execution context will be popped off when we reach the end of the file As we saw JavaScript has only one call stack hence it is single threaded And it executes the code line by line so it is synchronous But you might say I have used AJAX JavaScript is asynchronous No JavaScript is not asynchronous We will see how javascript handles asynchronous code in the upcoming blogs What s next I hope you liked this blog In the next blog I will cover the concept of hoisting Follow me to receive the notification Want to connect with me You can DM on Dev to and twitter	2021-07-16 21:02:01
Apple	AppleInsider - Frontpage News	Apple removes Fakespot from App Store following Amazon complaint	https://appleinsider.com/articles/21/07/16/apple-reportedly-removes-fakespot-from-app-store-at-amazons-request?utm_medium=rss	Apple removes Fakespot from App Store following Amazon complaintAmazon on Friday said it complained to Apple about an app called Fakespot which it claims inaccurately identified fraudulent sellers and fake reviews leading to the title s removal from the App Store Fakespot bills itself as a data analytics firm that applies artificial intelligence to the task of detecting false reviews and reviewers on a variety of sites including Amazon TripAdvisor Walmart and Yelp according to its website The goal of the program is to protect consumers from misleading information the company says Amazon which is facing a growing problem of fake or incentivized reviews in a statement said Fakespot provides customers with misleading information about our sellers and their products harms our sellers businesses and creates potential security risks when it uses tools that do not adhere to Amazon s own grading system reports CNET Read more	2021-07-16 21:50:31
海外科学	NYT > Science	What We Know About the Climate Connection to the European Floods	https://www.nytimes.com/2021/07/16/climate/europe-floods-climate-change.html	event	2021-07-16 21:50:34
海外科学	NYT > Science	C.D.C. Director Warns of a ‘Pandemic of the Unvaccinated’	https://www.nytimes.com/2021/07/16/health/covid-delta-cdc-walensky.html	winter	2021-07-16 21:58:12
海外科学	BBC News - Science & Environment	US wants giant radar in UK to track space objects	https://www.bbc.co.uk/news/uk-57866734	competition	2021-07-16 21:08:52
ニュース	BBC News - Home	Covid: Fully jabbed arrivals from France must still quarantine	https://www.bbc.co.uk/news/uk-57869880	covid	2021-07-16 21:53:10
ニュース	BBC News - Home	US wants giant radar in UK to track space objects	https://www.bbc.co.uk/news/uk-57866734	competition	2021-07-16 21:08:52
ニュース	BBC News - Home	Covid: Green Man festival sold out as return given go-ahead	https://www.bbc.co.uk/news/uk-wales-57823405	mogwai	2021-07-16 21:47:04
ニュース	BBC News - Home	Mark Cavendish denied chance to break Tour de France record as Matej Mohoric wins	https://www.bbc.co.uk/sport/cycling/57855534	Mark Cavendish denied chance to break Tour de France record as Matej Mohoric winsMatej Mohoric wins stage of the Tour de France denying Mark Cavendish an opportunity to break the record for stage wins he shares with Eddy Merckx	2021-07-16 21:52:22
ニュース	BBC News - Home	Livingstone hits England's fastest ever century in vain as hosts lose to Pakistan	https://www.bbc.co.uk/sport/cricket/57870059	Livingstone hits England x s fastest ever century in vain as hosts lose to PakistanLiam Livingstone s spectacular century cannot prevent England from being beaten by Pakistan in a riotous first Twenty at Trent Bridge	2021-07-16 21:24:45
ニュース	BBC News - Home	Lions have to look at themselves after first tour defeat - Dawson	https://www.bbc.co.uk/sport/rugby-union/57865603	africa	2021-07-16 21:36:29
ビジネス	ダイヤモンド・オンライン - 新着記事	米政権、企業に香港リスク勧告　中国の取り締まり強化受け - WSJ発	https://diamond.jp/articles/-/277185	取り締まり	2021-07-17 06:23:00
北海道	北海道新聞	ＮＹ株反落、２９９ドル安　感染再拡大で回復遅れ懸念	https://www.hokkaido-np.co.jp/article/568109/	遅れ	2021-07-17 06:02:00
北海道	北海道新聞	パリのエッフェル塔再開　昨秋から８カ月半ぶり	https://www.hokkaido-np.co.jp/article/568108/	新型コロナウイルス	2021-07-17 06:02:00
ビジネス	東洋経済オンライン	｢SLの王者｣D51形､日本全国を駆け巡った名場面 地域ごとに個性豊かな国民的機関車｢デゴイチ｣ | 旅･趣味 | 東洋経済オンライン	https://toyokeizai.net/articles/-/441098?utm_source=rss&utm_medium=http&utm_campaign=link_back	日本の鉄道	2021-07-17 06:30:00