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How to use Git and Dropbox together effectively?
... I use it all the time. I have multiple computers (two at home and one at work) on which I use Dropbox as a central bare repository. Since I don’t want to host it on a public service, and I don’t have access to a server that I can always SSH to, Dropbox takes care of this by syncing in the backg...
Main differences between SOAP and RESTful web services in Java [duplicate]
For now I have a slight idea about the differences between SOAP and RESTful services.
11 Answers
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How to apply two CSS classes to a single element
Can i apply 2 classes to a single div or span or any html element? For example:
7 Answers
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Generate 'n' unique random numbers within a range [duplicate]
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If you just need sampling without replacement:
>>> import random
>>> random.sample(range(1, 100), 3)
[77, 52, 45]
random.sample takes a population and a sample size k and returns k random members of the population.
If you have to control for the case where k is large...
Is there a typical state machine implementation pattern?
...ement the best way to go?
We have a current state (state) and a trigger for the transition.
19 Answers
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Designing function f(f(n)) == -n
...In other languages the largest positive integer will overflow, so it will work for all integers except that one.
To make it work for real numbers you need to replace the n in (-1)n with { ceiling(n) if n>0; floor(n) if n<0 }.
In C# (works for any double, except in overflow situations):
st...
How to make an Android device vibrate?
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Try:
import android.os.Vibrator;
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Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 500 milliseconds
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
v.vibrate(VibrationEffect.createOne...
How to remove files and directories quickly via terminal (bash shell) [closed]
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rm -rf some_dir
-r "recursive"
-f "force" (suppress confirmation messages)
Be careful!
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How do I get a file's directory using the File object?
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In either case, I'd expect file.getParent() (or file.getParentFile()) to give you what you want.
Additionally, if you want to find out whether the original File does exist and is a directory, then exists() and isDirectory() are what you're after.
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Does java have a int.tryparse that doesn't throw an exception for bad data? [duplicate]
... Integer.parseInt(value);
return true;
} catch (NumberFormatException e) {
return false;
}
}
...and you can use it like this:
if (tryParseInt(input)) {
Integer.parseInt(input); // We now know that it's safe to parse
}
EDIT (Based on the comment b...