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Why hasn't functional programming taken over yet?
...
Javascript, python, and ruby are good illustrations of how it indeed has
– nafg
May 20 '14 at 6:47
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Simple explanation of clojure protocols
...: Interfaces and Extension Methods in C# and Java, Monkeypatching in Ruby, Python, ECMAScript.
Note that Clojure actually already has a mechanism for solving the Expression Problem: Multimethods. The problem that OO has with the EP is that they bundle operations and types together. With Multimethod...
How and when to use ‘async’ and ‘await’
...tion is done, the OS will invoke the callback. This is what Node.js or the Python Twisted framework does and they have some nice explanation, too.
– Roman Plášil
Aug 18 '13 at 16:59
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Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]
...y provide no admin access, which makes installing some things (in my case, Python-like things such as pip) a nightmare.
– SilentSteel
Jul 28 '13 at 6:41
1
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Apply multiple functions to multiple groupby columns
...t, it's just a much-more-detailed comment on Ted's answer, plus code/data. Python/pandas is not my first/best, but I found this to read well:
df.groupby('group') \
.apply(lambda x: pd.Series({
'a_sum' : x['a'].sum(),
'a_max' : x['a'].max(),
'b_mean' : x['b'].mea...
What is the optimal Jewish toenail cutting algorithm?
... five toes per foot*, so there are only 5! = 120 unrestricted sequences.
Python example:
#seq is only valid when consecutive elements in the list differ by at least two.
def isValid(seq):
for i in range(len(seq)-1):
a = seq[i]
b = seq[i+1]
if abs(a-b) == 1:
...
Regular expression to match non-ASCII characters?
...n external libraries to recognize that "Αλφα" is a word, or even that "é" is a letter.
But so it goes.
This guy has written a good library for handling Unicode in Javascript Regexes:
http://blog.stevenlevithan.com/archives/javascript-regex-and-unicode
The Unicode stuff is a plugin to this ...
How do I use valgrind to find memory leaks?
...n even be used for other
languages when configured properly (see this for Python).
To run Valgrind, pass the executable as an argument (along with any
parameters to the program).
valgrind --leak-check=full \
--show-leak-kinds=all \
--track-origins=yes \
--verbose \
...
Is there any way to put malicious code into a regular expression?
...pression Matching Can Be Simple And Fast
(but is slow in Java, Perl, PHP, Python, Ruby, ...) talks about ways that most modern NFAs, which all seem to derive from Henry Spencer’s code, suffer severe performance degradation, but where a Thompson‐style NFA has no such problems.
If you only admit...
ASP.NET MVC View Engine Comparison
...n on the Castle project
website.
Pros:
modeled after "wrist-friendly python syntax"
On-demand compiled views (but no precompilation available)
Cons:
designed to be written in the language Boo
Example:
<html>
<head>
<title>${title}</title>
</head>...