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How to compare strings in Bash
...if [ = "valid" ]; then
Non-standard use of == operator
Note that Bash allows == to be used for equality with [, but this is not standard.
Use either the first case wherein the quotes around $x are optional:
if [[ "$x" == "valid" ]]; then
or use the second case:
if [ "$x" = "valid" ]; then
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Is there a method that works like start fragment for result?
...e 3 parts of the sign-in process and each had their own activity that was called with startActivityForResult().
10 Answers...
Center a DIV horizontally and vertically [duplicate]
Is there a way to CENTER A DIV vertically and horizontally but, and that is important, that the content will not be cut when the window is smaller than the content The div must have a background color and a width and hight.
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How to debug Angular JavaScript Code
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shame it doesn't really work. I wish the guy would start maintaining the thing cuz it's a great idea and has a lot of potential
– Tules
Apr 12 '14 at 5:26
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Laravel Migration Change to Make a Column Nullable
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->change() requires you to install the Doctrine DBAL package, and it does not inherently recognize all the same column types that are available out of the box from laravel.. for example double is not a recognized column type to DBAL.
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How do I check if a variable exists?
...have nested functions, variables in outer scopes. If you want to check for all of them, you're probably best off triggering NameError after all.
– Petr Viktorin
Jun 10 '14 at 20:18
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How do I configure git to ignore some files locally?
Can I ignore files locally without polluting the global git config for everyone else? I have untracked files that are spam in my git status but I don't want to commit git config changes for every single little random untracked file I have in my local branches.
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Temporarily disable Eclipse plugin
Is there a way to disable an Eclipse plugin without actually uninstalling it?
3 Answers
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What's a monitor in Java?
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A monitor is mechanism to control concurrent access to an object.
This allows you to do:
Thread 1:
public void a()
{
synchronized(someObject) {
// do something (1)
}
}
Thread 2:
public void b()
{
synchronized(someObject) {
// do something else (2)
}
}
This ...
What is the difference between id and class in CSS, and when should I use them? [duplicate]
... of "comments" or a certain list style to use for related links.
Additionally, a given element can have more than one class associated with it, while an element can only have one id. For example, you can give a div two classes whose styles will both take effect.
Furthermore, note that classes are...