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Multiple INSERT statements vs. single INSERT with multiple VALUES
...pile time for these should be minimal.
I thought I'd look into this a bit more though so set up a loop (script) and tried adjusting the number of VALUES clauses and recording the compile time.
I then divided the compile time by the number of rows to get the average compile time per clause. The res...
Loop code for each file in a directory [duplicate]
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Is the $files variable used to avoid calling scandir() more than once in the foreach loop? Or can I embed it directly without any side effects?
– Zero3
May 10 '15 at 15:57
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Case-insensitive string comparison in C++ [closed]
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How can I join elements of an array in Bash?
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Parsing JSON from XmlHttpRequest.responseJSON
... and JSON.
JSONHttpRequest
If you prefer to use responseJSON, but want a more lightweight solution than JQuery, you might want to check out my JSONHttpRequest. It works exactly like a normal XMLHttpRequest, but also provides the responseJSON property. All you have to change in your code would be t...
How can I tell when a MySQL table was last updated?
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Select row with most recent date per user
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No need for subqueries! Moreover, this solution doesn't work if there are two records with exactly the same time. There is no need to try reinvent the wheel every time, as this is common problem - instead, go for already tested and optimized soluti...
Is it expensive to use try-catch blocks even if an exception is never thrown?
...e caught and code continue to execute afterwards in the same method, it is more difficult to reason about optimizations that can be made, so they are less likely to happen. (Someone would have to program the compiler to do them, reason about and guarantee correctness, etc. It'd be a big pain for som...
What happens if a finally block throws an exception?
...ometimes write files to removable or networked disks; problems can be much more common with those. If someone yanks out a USB stick before a file has been fully written, it would be better to tell them immediately than wait until they get where they're going and find the file is corrupt. Yielding ...