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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 pass a class type as a function parameter
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How to handle multiple cookies with the same name?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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...
How to create a drop-down list?
...s is the basics but there is more to be self taught with experimentation.
https://developer.android.com/guide/topics/ui/controls/spinner.html
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