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Meaning of @classmethod and @staticmethod for beginner? [duplicate]
...<= 31 and month <= 12 and year <= 3999
date2 = Date.from_string('11-09-2012')
is_date = Date.is_date_valid('11-09-2012')
Explanation
Let's assume an example of a class, dealing with date information (this will be our boilerplate):
class Date(object):
def __init__(self, day=0, mont...
Find all records which have a count of an association greater than zero
..._id
=> [43, 34, 45, 55, 17, 19, 1, 3, 4, 18, 44, 5, 13, 22, 16, 6, 53]
[11] pry(main)> _.size
=> 17
[12] pry(main)> Article.joins(:comments).size
=> 45
[13] pry(main)> Article.joins(:comments).distinct.size
=> 17
[14] pry(main)> Article.joins(:comments).distinct.to_sql
=> ...
Is there a simple way to convert C++ enum to string?
...ript?
– phillipwei
Aug 13 '09 at 16:11
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Tetris-ing an array
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BoltClock♦
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answered Jul 18 '10 at 11:15
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Calling JMX MBean method from a shell script
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edited May 23 '19 at 11:50
Dónal
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How to remove newlines from beginning and end of a string?
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answered Sep 17 '11 at 11:19
CrozinCrozin
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#ifdef replacement in the Swift language
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Community♦
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Jean Le MoignanJean Le Moignan
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How do I make a text input non-editable?
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answered Sep 9 '10 at 11:36
BoltClock♦BoltClock
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How does RegexOptions.Compiled work?
...| 1268 ms
Compiled | x64 | 281 ms | 176 ms | 1180 ms
These results show that compiled regular expressions can be up to 60% faster for cases where you reuse the Regex object. However in some cases can be over 3 orders of magnitude slower to construct.
It also shows th...
How to convert list of key-value tuples into dictionary?
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answered Jul 5 '11 at 17:28
ninjageckoninjagecko
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