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Rails migrations: Undo default setting for a column
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edited Nov 7 '18 at 23:48
Joshua Pinter
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How to count the number of set bits in a 32-bit integer?
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Sass and combined child selector
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edited Apr 30 '15 at 22:58
Continuity8
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Pythonic way to add datetime.date and datetime.time objects
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How do I type using my keyboard on the iphone simulator?
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Which, if any, C++ compilers do tail-recursion optimization?
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All current mainstream compilers perform tail call optimisation fairly well (and have done for...
Get loop count inside a Python FOR loop
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edited Jun 21 '18 at 5:09
answered Jul 1 '10 at 23:02
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How to center a checkbox in a table cell?
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Simple logical operators in Bash
...o test if a file exists. There are also string equality operators: "$string1" == "$string2" (beware that the right-hand side is a pattern, e.g. [[ $foo == a* ]] tests if $foo starts with a while [[ $foo == "a*" ]] tests if $foo is exactly a*), and the familiar !, && and || operators for nega...
SQLite INSERT - ON DUPLICATE KEY UPDATE (UPSERT)
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Since 3.24.0 SQLite also supports upsert, so now you can simply write the following
INSERT INTO...