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Can I update a component's props in React.js?
...w: and replaced by a combination of getDerivedStateFromProps and componentDidUpdate.
– bvdb
Sep 21 '18 at 20:54
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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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thanks @hhaamu. Yep did try the docs but your above is much more concise.
– Thomas Browne
Jul 28 '09 at 20:17
119
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How to percent-encode URL parameters in Python?
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id: "1"
};
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What are the most common SQL anti-patterns? [closed]
...ns of bit
flags, large strings and integers.
Then there's the "I miss .ini
files" pattern: storing CSVs, pipe
delimited strings or other parse
required data in large text fields.
And for MS SQL server the use of
cursors at all. There's a better
way to do any given cursor task.
Edited because there...
How to use a dot “.” to access members of dictionary?
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I've always kept this around in a util file. You can use it as a mixin on your own classes too.
class dotdict(dict):
"""dot.notation access to dictionary attributes"""
__getattr__ = dict.get
__setattr__ = dict.__setitem__
__delattr__ = dict.__deli...
SQL Server - transactions roll back on error?
...)
DECLARE @ErrorState INT = ERROR_STATE()
-- Use RAISERROR inside the CATCH block to return error
-- information about the original error that caused
-- execution to jump to the CATCH block.
RAISERROR (@ErrorMessage, @ErrorSeverity, @ErrorState);
END CATCH
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How to set up a git project to use an external repo submodule?
...won't change much from version-to-version -- using a submodule doesn't provide much value.
– memmons
Feb 17 '13 at 22:05
2
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What is digest authentication?
...along with the username and the realm to attempt to authenticate.
Server-side the same method is used to generate a hashkey, only instead of using the password typed in to the browser the server looks up the expected password for the user from its user DB. It looks up the stored password for this u...
List tables in a PostgreSQL schema
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What is difference between sjlj vs dwarf vs seh?
I can't find enough information to decide which compiler should I use to compile my project. There are several programs on different computers simulating a process. On Linux, I'm using GCC. Everything is great. I can optimize code, it compiles fast and uses not-so-much memory.
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