投稿時間:2022-11-27 20:11:01 RSSフィード2022-11-27 20:00 分まとめ(14件)

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python	Pythonタグが付けられた新着投稿 - Qiita	TwitterAPIを使ってランダムな固定文をツイートさせた話	https://qiita.com/namiki-ap/items/47e8fff5141745df337d	twitter	2022-11-27 19:28:25
python	Pythonタグが付けられた新着投稿 - Qiita	contabo VPSにEclipseをインストールしてみた	https://qiita.com/towam/items/8e976071da354ebe5613	contabovps	2022-11-27 19:28:10
python	Pythonタグが付けられた新着投稿 - Qiita	PythonでOpenImageIO(OIIO)を使ってOpenEXRをJPEGに変換する	https://qiita.com/plinecom/items/f5a0e63b1835f8e71338	digitalbigmo	2022-11-27 19:25:20
js	JavaScriptタグが付けられた新着投稿 - Qiita	いくつかの言語で、空白類の挙動	https://qiita.com/Nabetani/items/e6030ca525063d38aaef	javascript	2022-11-27 19:41:02
js	JavaScriptタグが付けられた新着投稿 - Qiita	Javascript の exit()	https://qiita.com/YuuT_38/items/9241c66e72ac326a5d8c	javascript	2022-11-27 19:39:16
Linux	Ubuntuタグが付けられた新着投稿 - Qiita	Linuxサーバーの環境構築の自分用メモ（Ubuntu 22.04.1 LTS）	https://qiita.com/yuinore/items/3545c32bb69253b8c0e6	sshrootnnnnnnnnn	2022-11-27 19:18:34
AWS	AWSタグが付けられた新着投稿 - Qiita	AWS Elastic BeanstalkでEC2インスタンスをデフォルトVPC以外のVPCに作成する方法	https://qiita.com/duelist2020jp/items/11da2bca492255927273	elastic	2022-11-27 19:25:42
golang	Goタグが付けられた新着投稿 - Qiita	いくつかの言語で、空白類の挙動	https://qiita.com/Nabetani/items/e6030ca525063d38aaef	javascript	2022-11-27 19:41:02
海外TECH	DEV Community	Bridge pattern in TypeScript	https://dev.to/jmalvarez/bridge-pattern-in-typescript-3hmj	Bridge pattern in TypeScript IntroductionThe Bridge pattern is a structural design pattern that allows you to separate a big class or set of related classes into two different domains abstraction also called interface and implementation also called platform The abstraction layer is the one that the client will use to interact with our application This layer is not going to contain the business logic of our application Instead it will delegate the work to the implementation layer Imagine that you have a class that represents a vehicle The vehicles can have different engines You could start with a Mercedes and a BMW vehicles with V and V as possible engines Initially you would have combinations of vehicles each one being a class in your application Mercedes VMercedes VBMW VBMW VImagine now that you want to add a new engine type V You would have to create new classes Mercedes VMercedes VMercedes VBMW VBMW VBMW VIf now you add a new vehicle you would have to create new classes This is not a big deal if you have only or vehicles but what if you have vehicles You would have to create new classes for each different engine As you can see this problem grows exponentially The Bridge pattern allows you to solve this in an easy way separating both domains and being able to develop them independently ApplicabilityUse the Bridge pattern when you want to split a big class that has several variants of some functionality into two different layers you need to switch between different variants at runtime ImplementationYou can find the full example source code here In my example I have an application that contains the user interface for different kind of platforms and the backend implementation for each user interface Define the two different layers abstraction and implementation of your classes In my example the abstraction layer is going to be the user interface and the implementation layer is going to be the backend Once the two different layers have been clearly defined we can create abstract classes for each layer The abstraction layer will contain a dependency to the implementation layer This dependency will be used to delegate the work to the implementation layer In these abstract classes you can already define the methods that you want to expose to the client abstract class UI protected backend Backend constructor backend Backend this backend backend abstract render void abstract class Backend abstract getData string Now we can create the concrete classes for each layer I will start by adding a UI for the Android and iOS platforms and a backend for both class AndroidUI extends UI public render const data this backend getData console log AndroidUI Rendering data from the backend gt data class IPhoneUI extends UI public render const data this backend getData console log IPhoneUI Rendering data from the backend gt data class MobileBackend implements Backend public getData return MobileBackend Data from the backend The client could already use these classes Notice how the client is responsible of injecting the implementation class in the abstraction class Example of client code const mobileBackend new MobileBackend const androidUI new AndroidUI mobileBackend androidUI render Output AndroidUI Rendering data from the backend gt MobileBackend Data from the backendconst iphoneUI new IPhoneUI mobileBackend iphoneUI render Output IPhoneUI Rendering data from the backend gt MobileBackend Data from the backend Now we can very easily add new variants to our layers For example I m going to add a variant for the Web platform For this I only have to add two new classes without having to modify the existing code meeting the Open Closed principle class WebUI extends UI public render const data this backend getData console log WebUI Rendering data from the backend gt data class WebBackend implements Backend public getData return WebBackend Data from the backend And now the client could use this new variant like this const webBackend new WebBackend const webUI new WebUI webBackend webUI render Output WebUI Rendering data from the backend gt WebBackend Data from the backendIt would be possible that we wanted to use the Web backend for the Android and iOS platforms because we wanted to render the application in the mobile browser instead of using the native UI We wouldn t need to introduce new changes for this the client could just inject the Web backend in the Android and iOS UIs const androidBrowserUI new AndroidUI webBackend androidBrowserUI render Output AndroidUI Rendering data from the backend gt WebBackend Data from the backend ResourcesExample source codeBridge refactoring guruOpen Closed principle jmalvarez dev	2022-11-27 10:03:47
海外ニュース	Japan Times latest articles	Protests spread across China as anger mounts over ‘COVID-zero’ policy	https://www.japantimes.co.jp/news/2022/11/27/asia-pacific/china-shanghai-covid-zero-protests/	Protests spread across China as anger mounts over COVID zero policyA fire in Xinjiang and a denial that COVID measures had hampered escape and rescue has fueled a wave of civil disobedience unseen since Xi	2022-11-27 19:16:45
ニュース	BBC News - Home	Encouraging self-harm to be criminalised in Online Safety Bill	https://www.bbc.co.uk/news/uk-63768496?at_medium=RSS&at_campaign=KARANGA	molly	2022-11-27 10:31:14
ニュース	BBC News - Home	Two boys, 16, die after being stabbed a mile apart in London	https://www.bbc.co.uk/news/uk-63770727?at_medium=RSS&at_campaign=KARANGA	incidents	2022-11-27 10:18:45
ニュース	BBC News - Home	Man found dead with 'hazardous substances' in Shevington named	https://www.bbc.co.uk/news/uk-england-manchester-63772618?at_medium=RSS&at_campaign=KARANGA	police	2022-11-27 10:18:47
サブカルネタ	ラーブロ	娘娘 武蔵浦和店＠武蔵浦和	http://ra-blog.net/modules/rssc/single_feed.php?fid=205240	武蔵浦和	2022-11-27 10:00:40