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Recursion or Iteration?
...ve (the last line is recursive call). Tail recursion should be recognized by the compiler and optimized to its iterative counterpart (while maintaining the concise, clear implementation you have in your code).
I would write the algorithm in the way that makes the most sense and is the clearest for...
How do I target only Internet Explorer 10 for certain situations like Internet Explorer-specific CSS
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What do you mean by "all of them are detecting the browser via navigator.userAgent"? Conditional compilation is a built-in feature of the JScript runtime, which cannot be spoofed via the user-agent string.
– BoltClock♦...
How to loop through files matching wildcard in batch file
...nment variable name is not
defined or the file is not found by the
search, then this modifier expands to the
empty string
https://ss64.com/nt/syntax-args.html
In the above examples %I and PATH can be replaced by other valid
values. The %~ syntax is te...
Evaluating a mathematical expression in a string
...+ expr + rpar)
).setParseAction(self.pushUMinus)
# by defining exponentiation as "atom [ ^ factor ]..." instead of
# "atom [ ^ atom ]...", we get right-to-left exponents, instead of left-to-right
# that is, 2^3^2 = 2^(3^2), not (2^3)^2.
factor = Forwar...
Python progression path - From apprentice to guru
...ding a site on Django, many questions that might stump you can be answered by looking at how Django implements the feature in question.
This way you'll continue to pick up new idioms, coding styles, and Python tricks. (Some will be good and some will be bad.)
And when you see something Pythony th...
Git On Custom SSH Port
...commends that I leave my SSH port to the custom port number they assign it by default (not 22). The thing is the while I know I can give the port number when create a remote config, it seems like I can't do the same when doing a git clone. I am using gitolite so I clone commands look like:
...
Removing an element from an Array (Java) [duplicate]
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Following a "deletion" (i.e. shifting the array left by one element) won't there be a duplicate of the end element? i.e. a.length will be the same following the deletion, no? I'm not saying I dislike the idea, just that one needs to be aware of this.
– A...
How to calculate moving average using NumPy?
...sum, which may be is faster than FFT based methods:
EDIT Corrected an off-by-one wrong indexing spotted by Bean in the code. EDIT
def moving_average(a, n=3) :
ret = np.cumsum(a, dtype=float)
ret[n:] = ret[n:] - ret[:-n]
return ret[n - 1:] / n
>>> a = np.arange(20)
>>>...
Why are Python lambdas useful? [closed]
...t(a, b), [1, 2, 3, 4, 5, 6, 7, 8, 9])
'1, 2, 3, 4, 5, 6, 7, 8, 9'
Sorting by an alternate key
>>> sorted([1, 2, 3, 4, 5, 6, 7, 8, 9], key=lambda x: abs(5-x))
[5, 4, 6, 3, 7, 2, 8, 1, 9]
I use lambda functions on a regular basis. It took me a while to get used to them, but eventually I ...
Undo a Git commit after push using reverse patch?
I've pushed a commit and I want to revert changes introduced by this commit by applying and committing a reversed patch. How do I do it?
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