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C++ Redefinition Header Files (winsock2.h)
...list that <windows.h> is included after <winsock2.h> or define _WINSOCKAPI_ first:
#define _WINSOCKAPI_ // stops windows.h including winsock.h
#include <windows.h>
// ...
#include "MyClass.h" // Which includes <winsock2.h>
See also this.
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Python argparse: Make at least one argument required
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args = vars(parser.parse_args())
if not any(args.values()):
parser.error('No arguments provided.')
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Python division
...t:
>>> float(10 - 20) / (100 - 10)
-0.1111111111111111
or from __future__ import division, which the forces / to adopt Python 3.x's behavior that always returns a float.
>>> from __future__ import division
>>> (10 - 20) / (100 - 10)
-0.1111111111111111
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What are the real-world strengths and weaknesses of the many frameworks based on backbone.js? [close
...oducing Marionette as a composite application architecture for Backbone:
http://lostechies.com/derickbailey/2011/11/17/introduction-to-composite-javascript-apps/
http://lostechies.com/derickbailey/2011/12/12/composite-js-apps-regions-and-region-managers/
Message Queues / Patterns
The same large...
Generate MD5 hash string with T-SQL
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CONVERT(VARCHAR(32), HashBytes('MD5', 'email@dot.com'), 2)
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How do you do a limit query in JPQL or HQL?
...SQL (using MsSql2008Dialect). This is good.
– Thierry_S
Nov 4 '13 at 17:00
17
@Rachel With setMax...
How to iterate through two lists in parallel?
... And to zip until both iterators are
exhausted, you would use
itertools.zip_longest.
Python 2
In Python 2, zip
returns a list of tuples. This is fine when foo and bar are not massive. If they are both massive then forming zip(foo,bar) is an unnecessarily massive
temporary variable, and should be r...
Find where python is installed (if it isn't default dir)
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@Ned check out stackoverflow.com/questions/304319/…
– Foo Bah
Jul 21 '11 at 4:06
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Learning Python from Ruby; Differences and Similarities
...l read and write access to variables from the outer scope.
Python has list comprehensions, which are pretty expressive. For example, if you have a list of numbers, you can write
[x*x for x in values if x > 15]
to get a new list of the squares of all values greater than 15. In Ruby, you'd hav...
How to check whether dynamically attached event listener exists or not?
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