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How do I concatenate two arrays in C#?
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var z = new int[x.Length + y.Length];
x.CopyTo(z, 0);
y.CopyTo(z, x.Length);
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Concatenate two slices in Go
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@Toad: It doesn't actually spread them out. In the foo() example above, the is parameter holds a copy of the original slice, which is to say it has a copy of the light-weight reference to the same underlying array, len and cap. If the foo function alters a member, the change will be...
range() for floats
...ction, but writing one like this shouldn't be too complicated.
def frange(x, y, jump):
while x < y:
yield x
x += jump
As the comments mention, this could produce unpredictable results like:
>>> list(frange(0, 100, 0.1))[-1]
99.9999999999986
To get the expected result, y...
What is the difference between Θ(n) and O(n)?
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Short explanation:
If an algorithm is of Θ(g(n)), it means that the running time of the algorithm as n (input size) gets larger is proportional to g(n).
If an algorithm is of O(g(n)), it means that the running time of the ...
How to copy commits from one branch to another?
...You should really have a workflow that lets you do this all by merging:
- x - x - x (v2) - x - x - x (v2.1)
\
x - x - x (wss)
So all you have to do is git checkout v2.1 and git merge wss. If for some reason you really can't do this, and you can't use git rebase to move your...
What is an undefined reference/unresolved external symbol error and how do I fix it?
What are undefined reference/unresolved external symbol errors? What are common causes and how to fix/prevent them?
34 Answ...
Does Python have a ternary conditional operator?
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Yes, it was added in version 2.5. The expression syntax is:
a if condition else b
First condition is evaluated, then exactly one of either a or b is evaluated and returned based on the Boolean value of condition. If condition evaluates to True, then a is evaluate...
A Regex that will never be matched by anything
...atch a character a after the end of the string. Good luck.
WARNING:
This expression is expensive -- it will scan the entire line, find the end-of-line anchor, and only then not find the a and return a negative match. (See comment below for more detail.)
* Originally I did not give much thought o...
Passing functions with arguments to another function in Python?
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I find that the limited syntax is nearly opaque; they're hard to explain to n00bz. Yes, they do work here, and the confusing features of the syntax are absent. This is -- perhaps -- the only example I've seen of a lambda that's not obscure.
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Where do I find old versions of Android NDK? [closed]
...he link to the NDK that you want and download it from dl.google.com:
Linux example:
http://dl.google.com/android/ndk/android-ndk-r9b-linux-x86.tar.bz2
http://dl.google.com/android/ndk/android-ndk-r9b-linux-x86_64.tar.bz2
OS X example:
http://dl.google.com/android/ndk/android-ndk-r9b-darwin-x86.ta...