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javascript check for not null

Below is a code snippet, where we retrieve a form value. Before further processing check if the value is not null.. 10 Answ...
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What does Java option -Xmx stand for? [duplicate]

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How to fix PCH error?

When I try to build my app in Xcode , I get this error message: 22 Answers 22 ...
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How to change file encoding in NetBeans?

I want to change encoding of file in NetBeans IDE (ver 6.9.1), let's say from ANSII to UTF-8. How can I do that? 8 Answers ...
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Converting Java objects to JSON with Jackson

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Codeigniter - no input file specified

I am a beginner in Codeigniter and I saw a CI tutorial and was just trying to do a simple thing. I downloaded the CI and added this file to controller directory, but it won't work. ...
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Double decimal formatting in Java

I'm having some problems formatting the decimals of a double. If I have a double value, e.g. 4.0, how do I format the decimals so that it's 4.00 instead? ...
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What, exactly, is needed for “margin: 0 auto;” to work?

I know that setting margin: 0 auto; on an element is used to centre it (left-right). However, I know that the element and its parent must meet certain criteria for the auto margin to work, and I can never seem to get the magic right. ...
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How to run Selenium WebDriver test cases in Chrome?

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Rename multiple files in a directory in Python [duplicate]

I'm trying to rename some files in a directory using Python. 15 Answers 15 ...