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How to find out client ID of component for ajax update/render? Cannot find component with expression

...ding on the current naming container. See following chapter. Note: if it happens to contain iteration index like :0:, :1:, etc (because it's inside an iterating component), then you need to realize that updating a specific iteration round is not always supported. See bottom of answer for more detai...
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How do I save a UIImage to a file?

... Of course you can create subfolders in the documents folder of your app. You use NSFileManager to do that. You use UIImagePNGRepresentation to convert your image to NSData and save that to disk. // Create path. NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUser...
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新浪是如何分析处理32亿条实时日志的? - 更多技术 - 清泛网 - 专注C/C++及内核技术

...超线程;System Level的优化如关闭swap,调整max open files等;App Level的优化如Java运行环境版本的选择,ES_HEAP_SIZE的设置,修改bulk index的queue size等,另外还设置了默认的index template,目的是更改默认的shard,replica数并将string改为not_ana...
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git: How to ignore all present untracked files?

... don't have a .gitignore file yet your gitignore will ignore itself! This happens because the file .gitignore gets created before the git status --porcelain is executed. So if you don't have a .gitignore file yet I recommend using: echo "$(git status --porcelain | grep '^??' | cut -c4-)" > .giti...
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Fat models and skinny controllers sounds like creating God models [closed]

...ding a lot of blogs which advocate the fat models and skinny controllers approach, esp. the Rails camp. As a result the routers is basically just figuring out what method to call on what controller and all the controller method does is call the corresponding method on the model and then bring up t...
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Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]

... to batch callbacks to the main thread to reduce context switching. Volley apparently has futures, too. Check out RequestFuture if you’re interested. If you’re dealing with high-resolution compressed images, Volley is the only solution here that works well. Volley can be used with Okhttp (New ve...
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Does every web request send the browser cookies?

... Yes, you could orgnize your site/app structure such that all URLs requiring cookies are wthin /app/ or suchlike - it would retain portability without needing separate subdomains to eliminate redundant overhead. Or you could ditch the now useless Google Anal...
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How can I determine if a JavaScript variable is defined in a page? [duplicate]

... Jonathan, are you sure about that? John Resig uses this exact approach in his javascript tutorial here: ejohn.org/apps/learn/#11 You can run the script on the page and see for yourself. – Paul Batum Sep 26 '08 at 23:13 ...
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Android Studio rendering problems

...o 0.2.3 and when opened an activity layout normally, the preview should appear on the right side, so that I can switch between Text and Design mode, which should again show the preview of the layout. ...
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How can I convert my Java program to an .exe file? [closed]

...r The Java Packager tool compiles, packages, and prepares Java and JavaFX applications for distribution. The javapackager command is the command-line version. – Oracle's documentation The javapackager utility ships with the JDK. It can generate .exe files with the -native exe flag, among many ot...