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What's the difference between lists enclosed by square brackets and parentheses in Python?
Are they both valid? Is one preferred for some reason?
6 Answers
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Array.Add vs +=
...ay in a single write-operation
$arr.Count
5
If that's not possible, consider using a more efficient collection like List or ArrayList (see the other answer).
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Psql list all tables
...UERY **********
SELECT d.datname as "Name",
pg_catalog.pg_get_userbyid(d.datdba) as "Owner",
pg_catalog.pg_encoding_to_char(d.encoding) as "Encoding",
d.datcollate as "Collate",
d.datctype as "Ctype",
pg_catalog.array_to_string(d.datacl, E'\n') AS "Access privilege...
How to install mongoDB on windows?
...it is anything for me. I downloaded the 32bit windows version, but have no idea on how to continue from now on.
15 Answers
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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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Find first element in a sequence that matches a predicate
I want an idiomatic way to find the first element in a list that matches a predicate.
4 Answers
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Why does the lock object have to be static?
...atic shared data (and hence need static lock, also refactoring may be good idea instead), same for static...
– Alexei Levenkov
Dec 22 '17 at 16:22
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Specify custom Date format for colClasses argument in read.table/read.csv
...your data.
Edit ---
You might want to run setClass('myDate') first to avoid the warning (you can ignore the warning, but it can get annoying if you do this a lot and this is a simple call that gets rid of it).
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git produces Gtk-WARNING: cannot open display
...this behavior on a RedHat 5 machine where our Git version was 1.7.4.1.
I didn't have a high degree of confidence that unset SSH_ASKPASS wouldn't have unintended consequences, so I wanted to see if there was another solution.
I couldn't tell for certain, but it seems that a patch for this problem w...
Global access to Rake DSL methods is deprecated
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That did not work for me. I had to actually remove rake 0.9.1 > gem uninstall rake -v=0.9.1 and then > bundle update Thanks Antonio
– user779350
Jun 1 '11 at 12:20
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