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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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Use INSERT ... ON DUPLICATE KEY UPDATE. For example:
INSERT INTO `usage`
(`thing_id`, `times_...
Disable browser's back button
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edited May 23 '17 at 12:09
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answered Jun 7 '09 at 4:33
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How do I detect a click outside an element?
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81 Answers
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How to suppress scientific notation when printing float values?
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12 Answers
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How often does python flush to a file?
I'm unsure about (1).
5 Answers
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Add subdomain to localhost URL
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Unfortunately, because localhost is not a proper domain, you can't add a subdomain to it like ...
How can I generate a diff for a single file between two branches in github
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GitHub only exposes the way to show diff between two commits.
Provided those tags actually point...
How to get thread id from a thread pool?
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answered Jul 20 '10 at 20:59
skaffmanskaffman
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How to export plots from matplotlib with transparent background?
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186
Use the matplotlib savefig function with the keyword argument transparent=True to save the ima...
Swift class introspection & generics
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Well, for one, the Swift equivalent of [NSString class] is .self (see Metatype docs, though th...