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Shell equality operators (=, ==, -eq)
...eq foo ]; echo "$?" # wrong
-bash: [: foo: integer expression expected
2
(Side note: Quote those variable expansions! Do not leave out the double quotes above.)
If you're writing a #!/bin/bash script then I recommend using [[ instead. The doubled form has more features, more natural syntax, a...
Animate text change in UILabel
...ive-C
[UIView transitionWithView:self.label
duration:0.25f
options:UIViewAnimationOptionTransitionCrossDissolve
animations:^{
self.label.text = rand() % 2 ? @"Nice nice!" : @"Well done!";
} completion:nil];
Swift 3, 4, 5
UIView.tran...
How to add a line break in an Android TextView?
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25 Answers
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Eclipse error “ADB server didn't ACK, failed to start daemon”
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22 Answers
22
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An algorithm for inflating/deflating (offsetting, buffering) polygons
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12 Answers
12
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Delete specific line number(s) from a text file using sed?
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If you want to delete lines 5 through 10 and 12:
sed -e '5,10d;12d' file
This will print the results to the screen. If you want to save the results to the same file:
sed -i.bak -e '5,10d;12d' file
This will back the file up to file.bak, and delete the given lines.
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When to encode space to plus (+) or %20?
...ometimes the spaces get URL encoded to the + sign, some other times to %20 . What is the difference and why should this happen?
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How can I make a JUnit Test wait?
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How about Thread.sleep(2000); ? :)
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How to break nested loops in JavaScript? [duplicate]
...k < 4; k++){
for(var m = 0; m < 4; m++){
if(m == 2){
break dance;
}
}
}
}
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