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Best way to add “current” class to nav in Rails 3

...d this thoroughly and I'm very new to RoR (moving over after a decade with PHP) so if this has a major flaw I'd love to hear it. At least this way you only need 1 helper function and a simple call in each link. share ...
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PostgreSQL Connection URL

...er=host;Port=5432;User Id=username;Password=secret;Database=databasename; PHP documentation us here, the general connection string is host=hostname port=5432 dbname=databasename user=username password=secret If you're using something else, you'll have to tell us. ...
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What is Gradle in Android Studio?

... have to learn what each tool (dx, aapt) does in the SDK. Eclipse saved us all from these low level but important, fundamental details by giving us their own build system. Now, have you ever wondered why the res folder is in the same directory as your src folder? This is where the build system en...
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How to send a JSON object using html form data

...l form data then you have to decode it using json_decode. You'll then get all data in an array. $.ajax({ type: "POST", url: "serverUrl", data: formData, success: function(){}, dataType: "json", contentType : "application/json" }); ...
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How do I configure Notepad++ to use spaces instead of tabs?

...e size to 4. See documentation: http://docs.notepad-plus-plus.org/index.php/Built-in_Languages#Tab_settings share | improve this answer | follow | ...
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How to run travis-ci locally

... order to run the build. With jenkins you can download jenkins and run locally. Does travis offer something like this? 9 ...
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What exactly is Heroku?

I just started learning Ruby on rails and I was wondering what Heroku really is? I know that its a cloud that helps us to avoid using servers? When do we actually use it? ...
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When to use Spring Integration vs. Camel?

... We choose Camel over Spring-Integration because the fluent API is really nice. We actually use it in Spring projects and use Spring to configure part of it. The programming API's are clear and there is a large set of sensible components. We did a small scale shootout and basically at that t...
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计算统计特征(正态分布)函数及实例 - C/C++ - 清泛网 - 专注C/C++及内核技术

...AX_VAR; double _ave; //double _var; double _sam_stdev; double _all_stdev; double _sum; double _sum_2; int _count; double _min_v; double _max_v; StdevInfo() : _ave(0.0) //, _var(MAX_VAR) , _sam_stdev(sqrt(MAX_VAR)) , _all_stdev(0.0) , _sum(0.0) ...
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What is the difference between JSF, Servlet and JSP?

...r Pages) JSP is a Java view technology running on the server machine which allows you to write template text in client side languages (like HTML, CSS, JavaScript, ect.). JSP supports taglibs, which are backed by pieces of Java code that let you control the page flow or output dynamically. A well-kno...