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实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...便主动通知Nginx，并把相应的标识（比如一个自增的整数ID）保存在Nginx共享内存中，接下来，Nginx不会再去轮询数据库，而是改为轮询本地的共享内存，通过比对标识来判断是否有新消息，如果有便给客户端发出响应。
注：服...
How can I make a button redirect my page to another page? [duplicate]
...t to the button:
<button onclick="location.href = 'www.yoursite.com';" id="myButton" class="float-left submit-button" >Home</button>
But you shouldn't really have it inline like that, instead, put it in a JS block and give the button an ID:
<button id="myButton" class="float-left ...
Growing Amazon EBS Volume sizes [closed]
... make your upgrade much easier.
http://www.tekgoblin.com/2012/08/27/aws-guides-how-to-resize-a-ec2-windows-ebs-volume/
Thanks to TekGoblin for posting this article.
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A numeric string as array key in PHP
...thought it would be fun to point out that the behaviour is similar but not identical to JavaScript object keys.
foo = { '10' : 'bar' };
foo['10']; // "bar"
foo[10]; // "bar"
foo[012]; // "bar"
foo['012']; // undefined!
sh...
Java Naming Convention with Acronyms [closed]
...andard for this in Java, I'd like to note that the .NET Framework Design Guidelines do specify this.
Now before slamming me for being off topic, please remember that the class naming guidelines for Java and the .NET Framework are quite similar, which makes the .NET guidelines useful as a persuasiv...
What exactly is Hot Module Replacement in Webpack?
.../webpack.js.org/concepts/plugins/
Code Splitting: https://webpack.js.org/guides/code-splitting/
webpack-dev-server: https://webpack.js.org/configuration/dev-server/
It's not so much for HMR, but here are the links:
Example: https://webpack.js.org/guides/hot-module-replacement/
API: https://webpa...
iPhone App Minus App Store?
...00 devices. The developer program has the details but it involves adding UUIDs for each of the devices to your application package. UUIDs can be easiest retrieved using Ad Hoc Helper available from the App Store. For further details on this method, see Craig Hockenberry's Beta testing on iPhone 2.0 ...
How to select option in drop down using Capybara
... well: select('option_name', from: 'select_box'). Where the values can be: id, name, related label element. You can read more about Capybara and DSL options here.
– Nesha Zoric
Feb 26 '18 at 12:37
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How do I auto-hide placeholder text upon focus using css or jquery?
...e this functionality when the field is disabled here is the CSS code: /* Hiding the placeholder text (if any), when the holding field is disabled */ input:disabled::-webkit-input-placeholder { color:transparent; } input:disabled:-moz-placeholder { color:transparent; } input:disabled::-moz-placehold...
Which Java Collection should I use?
...
Since I couldn't find a similar flowchart I decided to make one myself.
This flow chart does not try and cover things like synchronized access, thread safety etc or the legacy collections, but it does cover the 3 standard Sets, 3 standard Maps and 2 standard Lists.
Th...