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How to format numbers as currency string?
...ecimal separator (we MUST use a decimal separator)
/*
according to [https://stackoverflow.com/questions/411352/how-best-to-determine-if-an-argument-is-not-sent-to-the-javascript-function]
the fastest way to check for not defined parameter is to use typeof value === 'undefined'
rather t...
Performance differences between debug and release builds
... in support of Edit-and-Continue. (Though this is reported to be fixed per https://connect.microsoft.com/VisualStudio/feedback/details/481671/vb-classes-with-events-are-not-garbage-collected-when-debugging, the generated code looks nasty, creating WeakReference objects and adding them to a static li...
map vs. hash_map in C++
...ash_map.
#include "StdAfx.h"
#include <hash_map>
I read this here
https://bytes.com/topic/c/answers/570079-perfomance-clear-vs-swap
saying that clear() is order of O(N). That to me, is very strange, but, that's the way it is.
...
git-diff to ignore ^M
...ne endings. You can also use the .gitattributes file for this.
More info:
https://help.github.com/articles/dealing-with-line-endings/#platform-all
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Converting between datetime, Timestamp and datetime64
...can reproduce the long value on numpy-1.8.0 installed as:
pip install git+https://github.com/numpy/numpy.git#egg=numpy-dev
The same example:
>>> from datetime import datetime
>>> import numpy
>>> numpy.datetime64('2002-06-28T01:00:00.000000000+0100').astype(datetime)
1...
How to sort objects by multiple keys in Python?
...ve if x < y, zero if x == y
and strictly positive if x > y.
https://portingguide.readthedocs.io/en/latest/comparisons.html#the-cmp-function
"""
return (x > y) - (x < y)
def multikeysort(items, columns):
comparers = [
((i(col[1:].strip()), -1) if col.startsw...
Pass Variables by Reference in Javascript
...rgument(eval(byRef("x")), 42);
alert("x after: " + x);
})()
Live sample https://jsfiddle.net/t3k4403w/
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TSQL - Cast string to integer or return default value
...nd we help each other to improve it. TRY_CAST Function for SQL Server 2008 https://gist.github.com/jotapardo/800881eba8c5072eb8d99ce6eb74c8bb
The two main differences are that you must pass 3 parameters and you
must additionally perform an explicit CONVERT or CAST to the field.
However, it i...
What is a “feature flag”?
...blic.
Here's a simple package that helps you do this in ASP.NET MVC land: https://github.com/cottsak/DevCookie (full disclosure: I'm the author)
Fowler also has a much longer article than the one linked above with a lot more details.
This post (on Fowler's site also) explains the various types of...
Curious null-coalescing operator custom implicit conversion behaviour
...he optimizer in Roslyn works, see my series of articles which begins here: https://ericlippert.com/2012/12/20/nullable-micro-optimizations-part-one/
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