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Difference between single and double square brackets in Bash
I'm reading bash examples about if but some examples are written with single square brackets:
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Collections.emptyMap() vs new HashMap()
What are some of the situations where I can use Collections.emptyMap() ? The Documentation says I can use this method if I want my collection to be immutable.
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Replace multiple characters in a C# string
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get dictionary key by value
How do I get a Dictionary key by value in C#?
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Why can't strings be mutable in Java and .NET?
Why is it that they decided to make String immutable in Java and .NET (and some other languages)? Why didn't they make it mutable?
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How to detect if a variable is an array
What is the best de-facto standard cross-browser method to determine if a variable in JavaScript is an array or not?
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How to get names of classes inside a jar file?
I have a JAR file and I need to get the name of all classes inside this JAR file. How can I do that?
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Unix command to find lines common in two files
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What is the most useful script you've written for everyday life? [closed]
Just wondering what little scripts/programs people here have written that helps one with his or her everyday life (aka not work related).
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