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How do I specify new lines on Python, when writing on files?

In comparison to Java (in a string), you would do something like "First Line\r\nSecond Line" . 13 Answers ...
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C++ equivalent of StringBuffer/StringBuilder?

Is there a C++ Standard Template Library class that provides efficient string concatenation functionality, similar to C#'s StringBuilder or Java's StringBuffer ? ...
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Begin, Rescue and Ensure in Ruby?

I've recently started programming in Ruby, and I am looking at exception handling. 7 Answers ...
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Can “this” ever be null in Java?

Saw this line in a class method and my first reaction was to ridicule the developer that wrote it.. But then, I figured I should make sure I was right first. ...
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Android emulator shows nothing except black screen and adb devices shows “device offline”

I am just trying to start development in Android. So, the problem is that when I try to launch an emulator by issuing the command emulator @A2 , an emulator comes up on the screen. But even after waiting for as long as 2-3 hrs, all it shows is a black screen. Not even the android home screen or t...
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Portable way to get file size (in bytes) in shell?

On Linux, I use stat --format="%s" FILE , but Solaris I have access to doesn't have stat command. What should I use then? ...
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How do I tidy up an HTML file's indentation in VI?

How do I fix the indentation of his huge html files which was all messed up? 11 Answers ...
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How can I measure the similarity between two images? [closed]

I would like to compare a screenshot of one application (could be a Web page) with a previously taken screenshot to determine whether the application is displaying itself correctly. I don't want an exact match comparison, because the aspect could be slightly different (in the case of a Web app, depe...
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Creating a temporary directory in Windows?

What's the best way to get a temp directory name in Windows? I see that I can use GetTempPath and GetTempFileName to create a temporary file, but is there any equivalent to the Linux / BSD mkdtemp function for creating a temporary directory? ...
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Convert an image to grayscale in HTML/CSS

Is there a simple way to display a color bitmap in grayscale with just HTML/CSS ? 25 Answers ...