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How can I represent an 'Enum' in Python?
...gt;>> Numbers = enum('ZERO', 'ONE', 'TWO')
>>> Numbers.ZERO
0
>>> Numbers.ONE
1
Support for converting the values back to names can be added this way:
def enum(*sequential, **named):
enums = dict(zip(sequential, range(len(sequential))), **named)
reverse = dict((val...
What is the difference between a static and a non-static initialization code block
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405
The code block with the static modifier signifies a class initializer; without the static modif...
Setting the filter to an OpenFileDialog to allow the typical image formats?
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edited Sep 17 '19 at 14:04
Sebastian Brosch
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Is it possible to implement dynamic getters/setters in JavaScript?
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2013 and 2015 Update (see below for the original answer from 2011):
This changed as of the ES2015 (aka "ES6") specification: JavaScript now has proxies. Proxies let you create objects that are true proxies for (facades on) ot...
Get specific line from text file using just shell script
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Hidden features of Windows batch files
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share
edited Aug 7 '10 at 18:00
community wiki
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Initial size for the ArrayList
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390
You're confusing the size of the array list with its capacity:
the size is the number of eleme...
Double exclamation points? [duplicate]
... // Evaluates to true.
If foo.bar is passed through, then it may not be 0 but some other falsy value. See the following truth table:
Truth Table for javascript
'' == '0' // false
0 == '' // true
0 == '0' // true
false == 'false'...
public friend swap member function
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edited Jan 5 at 11:05
Matthew K.
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answered Apr 17 '11 at 19:24...
How to set date format in HTML date input tag?
...ify that as a short date, the first day of August this year should be 1/8-2016, but even Chrome and Opera show 01/08/2016. Other browsers, like Safari and Firefox (at least on OS X) ignore OS settings entirely and always show 2016-08-16 no matter what. On a site where users can set their own date pr...