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What is the difference between static func and class func in Swift?
...al. For more information. See nextD's answer below. Also x.dynamicType has now been replaced with type(of:x)
– Honey
Jan 16 '17 at 2:54
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quick random row selection in Postgres
...e optimal solution if you want only one row selected, because you need to know the COUNT of the table to calculate the exact percentage.
To avoid a slow COUNT and use fast TABLESAMPLE for tables from 1 row to billions of rows, you can do:
SELECT * FROM my_table TABLESAMPLE SYSTEM(0.000001) LIMI...
Download a specific tag with Git
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This does (at least now) work for tags, though you end up in a detached HEAD state.
– mxcl
Jun 24 '13 at 23:31
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How to set Sqlite3 to be case insensitive when string comparing?
...Text_Value collate nocase);
Expressions involving Test.Text_Value should now be case insensitive. For example:
sqlite> select Text_Value from Test where Text_Value = 'B';
Text_Value
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b
sqlite> select Text_Value from Test order by Text_Value;
Text_Val...
INSERT IF NOT EXISTS ELSE UPDATE?
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It's valid if you know all the new value for all the fields. If the user update only, say, the Level, this approach cannot be followed.
– rds
Nov 14 '12 at 15:07
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How bad is shadowing names defined in outer scopes?
...t as yadda but miss one of the places it is used in the function's body... Now data refers to the global, and you start having weird behaviour - where you would have a much more obvious NameError if you didn't have a global name data.
Also remember that in Python everything is an object (including...
How can I get the list of a columns in a table for a SQLite database?
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Great! Now how is this done from outside the command line? How is this done from within my own C program?
– Aaron Bratcher
Sep 27 '13 at 13:56
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ValueError: setting an array element with a sequence
...itrary Python objects:
numpy.array([1.2, "abc"], dtype=object)
Without knowing what your code shall accomplish, I can't judge if this is what you want.
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How to determine the Boost version on a system?
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If you only need to know for your own information, just look in /usr/include/boost/version.hpp (Ubuntu 13.10) and read the information directly
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Bordered UITextView
... The WikiUpload links (for the two images) fails to find the image files now. ;-(
– Mike Gledhill
Apr 8 '14 at 7:41
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