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Check whether a value is a number in JavaScript or jQuery [duplicate]
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function isNumber(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
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How to merge multiple lists into one list in python? [duplicate]
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Just add them:
['it'] + ['was'] + ['annoying']
You should read the Python tutorial to learn basic info like this.
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What is &&& operation in C
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It's c = i && (&i);, with the second part being redundant, since &i will never evaluate to false.
For a user-defined type, where you can actually overload unary operator &, it might be different, but it's...
ggplot does not work if it is inside a for loop although it works outside of it [duplicate]
...ggplot function which works fine outside a loop but not inside even if the iterative value does not interfere with the ggplot function. Why is it so ?
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Getting associated type synonyms with template Haskell
...ms declared in a type class? I expected reify would do what I want, but it doesn't seem to provide all the necessary information. It works for getting function type signatures:
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Convert string to variable name in python [duplicate]
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x='buffalo'
exec("%s = %d" % (x,2))
After that you can check it by:
print buffalo
As an output you will see:
2
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Outputting data from unit test in python
If I'm writing unit tests in python (using the unittest module), is it possible to output data from a failed test, so I can examine it to help deduce what caused the error? I am aware of the ability to create a customized message, which can carry some information, but sometimes you might deal with m...
How to define “type disjunction” (union types)?
One way that has been suggested to deal with double definitions of overloaded methods is to replace overloading with pattern matching:
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Simulate low network connectivity for Android [closed]
I would like to test my application for cases of low network connectivity. Except standing in the elevator, what is the best way to do this? I've tried wrapping my phone in an aluminum foil, but it didn't help much.
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Media Player called in state 0, error (-38,0)
... are getting this error because you are calling mediaPlayer.start() before it has reached the prepared state.
Here is how you can do it :
mp.setDataSource(url);
mp.setOnPreparedListener(this);
mp.prepareAsync();
public void onPrepared(MediaPlayer player) {
player.start();
}
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