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How to check if a table contains an element in Lua?
...table with the specified key. the line "return set[key] ~= nil" fixes that error.
– oers
May 17 '12 at 8:19
Perhaps al...
mongodb: insert if not exists
...n("test").insert({a:1, b:12, c:13}) # This fails
E11000 duplicate key error index: foo.test.$a_1 dup key: { : 1.0 }
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Java FileReader encoding issue
... InputStream is = new FileInputStream(filename); here i got error file not found error with Russian file name
– Bhanu Sharma
Feb 10 '14 at 8:59
3
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How to replace list item in best way
I have replaced like above. Is there any other bestway to place compare than this one?
11 Answers
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Private properties in JavaScript ES6 classes
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And what about eslint? I got parser error at equal sign. Babel is working, just eslint can't parse this new js syntax.
– martonx
Feb 4 '19 at 21:55
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Possible to do a MySQL foreign key to one of two possible tables?
..., you can designate which target table is referenced.
CREATE TABLE popular_places (
user_id INT NOT NULL,
place_id INT NOT NULL,
place_type VARCHAR(10) -- either 'states' or 'countries'
-- foreign key is not possible
);
There's no way to model Polymorphic Associations using SQL constraint...
Kill detached screen session [closed]
...to blame)
– Hack-R
Mar 20 '15 at 15:05
once attached to the screen, exit also works
– kabrapanka...
Random number generator only generating one random number
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edited Aug 27 '17 at 22:05
answered Jul 13 '12 at 15:25
P...
Alternate background colors for list items
I have a list, and each item is linked, is there a way I can alternate the background colors for each item?
9 Answers
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Executing multi-line statements in the one-line command-line?
...rs in your source code that are not meant for the shell may cause a syntax error or alter the string unexpectedly.
Additionally, the shell's own \ processing in double-quoted strings can get in the way; for instance, to get Python to produce literal output ro\b, you must pass ro\\b to it; with a '...