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Is there a way to access method arguments in Ruby?
...ating the name of the parameter and whether it is required.
e.g.
If you do
def foo(x, y)
end
then
method(:foo).parameters # => [[:req, :x], [:req, :y]]
You can use the special variable __method__ to get the name of the current method. So within a method the names of its parameters can be...
Make a negative number positive
...ing is called "absolute value", and Java has a function called Math.abs to do it for you. Or you could avoid the function call and do it yourself:
number = (number < 0 ? -number : number);
or
if (number < 0)
number = -number;
...
HTML5 check if audio is playing?
...ry I was playing around with it more and it seems like in some browsers it does work and it some not. I guess it depends on implementation. But for all latest updates for chrome and firefox it seems to work, so This answer is correct for latest implementations.
– Tomas
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Warning “Do not Access Superglobal $_POST Array Directly” on Netbeans 7.4 for PHP
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Are you answering at the question "what does the warning mean" or at the question "how to remove it"? Because I agree with you, that's what the warning means, but using the function the warning stays there. I have it right now on a $name = filter_input(INPUT_POST, ...
Ruby / Rails - Change the timezone of a Time, without changing the value
...
What do you suggest against DST transitions ? Suppose the target time to convert is after the D/ST transition while Time.now is before the change. Would that work ?
– Cyril Duchon-Doris
Oct 2...
How can the Euclidean distance be calculated with NumPy?
...
The linalg.norm docs can be found here: docs.scipy.org/doc/numpy/reference/generated/… My only real comment was sort of pointing out the connection between a norm (in this case the Frobenius norm/2-norm which is the default for norm funct...
PHP: How to remove specific element from an array?
How do I remove an element from an array when I know the elements name? for example:
21 Answers
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How do you calculate log base 2 in Java for integers?
....log(2)) fails (just because there are only 32 "dangerous" values), but it does not mean that it will work the same way on any PC.
The usual trick here is using "epsilon" when rounding. Like (int)(Math.log(x)/Math.log(2)+1e-10) should never fail. The choice of this "epsilon" is not a trivial task.
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How to fix “Attempted relative import in non-package” even with __init__.py
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I'm not either of the downvoters, but I feel this could use quite a bit more detail, given the popularity of this question and answer. Noting stuff like from what directory to execute the above shell command, the fact that you need __init__.pys al...
Should I implement __ne__ in terms of __eq__ in Python?
...eems to make sense that I should override the __ne__ method as well, but does it make sense to implement __ne__ in terms of __eq__ as such?
...