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What is the most efficient/elegant way to parse a flat table into a tree?
...id, descendant_id) VALUES
(1,1), (1,2), (1,4), (1,6),
(2,2), (2,4),
(3,3), (3,5),
(4,4),
(5,5),
(6,6);
Now you can get a tree starting at node 1 like this:
SELECT f.*
FROM FlatTable f
JOIN ClosureTable a ON (f.id = a.descendant_id)
WHERE a.ancestor_id = 1;
The output (in MySQL c...
How can I maximize the editor pane in IntelliJ IDEA?
... using IntelliJ 11.1.2 on Kubuntu 12.04 LTS with the Default keymap.
14.0.3 on MacOS X
It's Cmd + Shift + F12 in IntelliJ IDEA 14.0.3 on MacOS X.
UPDATE on 2015-03-24:
IntelliJ IDEA 14.1 now has support for Distraction Free Mode. You can invoke it by clicking View > Enter Distraction Free Mode...
How can I tell who forked my repository on GitHub?
...
3 Answers
3
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if, elif, else statement issues in Bash
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U. Windl
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answered Apr 16 '13 at 10:34
fedorqui 'SO stop harming'fedorqu...
Array Length in Java
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edited Apr 23 '18 at 5:17
Azeem
6,79344 gold badges1717 silver badges3232 bronze badges
an...
Python syntax for “if a or b or c but not all of them”
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238
If you mean a minimal form, go with this:
if (not a or not b or not c) and (a or b or c):
Wh...
Get root view from current activity
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1063
If you need root view of your activity (so you can add your contents there) use
findViewById(an...
Is sizeof(bool) defined in the C++ language standard?
...ntation defined, and the standard puts notable emphasis on this fact.
§5.3.3/1, abridged:
sizeof(char), sizeof(signed char) and sizeof(unsigned char) are 1; the result of sizeof applied to any other fundamental type is implementation-defined. [Note: in particular, sizeof(bool) and sizeof(wchar...
What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL?
...8 to 127 0 to 255
smallint | 2 bytes -32768 to 32767 0 to 65535
mediumint | 3 bytes -8388608 to 8388607 0 to 16777215
int/integer | 4 bytes -2147483648 to 2147483647 0 to 4294967295
bigi...
Remove empty strings from a list of strings
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1203
I would use filter:
str_list = filter(None, str_list)
str_list = filter(bool, str_list)
str_lis...