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Redis is single-threaded, then how does it do concurrent I/O?
...ts by executing several flows corresponding to those clients with only one computation unit. In this context, parallelism would mean the server is able to perform several things at the same time (with multiple computation units), which is different.
For instance a bartender is able to look after se...
How to read the database table name of a Model instance?
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How to drop multiple columns in postgresql
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Create empty queryset by default in django form fields
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How do I delete/remove a shell function?
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Note that this applies to POSIX compliant shells, not just Bash.
– Franklin Yu
Jan 18 at 7:08
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What is the meaning of the term arena in relation to memory?
...ocations.
Each of those techniques is very specialized and generally only comes in handy if you know exactly what you're doing and why the normal library allocation is not good enough. Note that a good memory allocator will already do lots of magic itself, and you need a decent amount of evidence t...
Regex to match a digit two or four times
... these will create a capturing group. Further details here: stackoverflow.com/questions/3512471/non-capturing-group
– Jeremy Moritz
Oct 15 '14 at 20:44
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Git search for string in a single file's history
...g -G'bar' -- foo.rb to search for diff that contains 'bar' rather than for commits that changed number of occurences of 'bar' (see git-log manpage).
– Jakub Narębski
Apr 18 '12 at 19:16
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Overwrite single file in my current branch with the same file in the master branch?
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Python - json without whitespaces
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I arrived here trying to compare the Django request.body to the request.data so folks might find this useful bytes(json.dumps(request.data, separators=(',', ':')), 'utf-8') == request.body
– Matt
Jun 12 at 14:26...