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Replace selector images programmatically
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245
As far as I've been able to find (I've tried doing something similar myself), there's no way to ...
How does the const constructor actually work?
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85
Const constructor creates a "canonicalized" instance.
That is, all constant expressions begin c...
string c_str() vs. data()
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Aaron McDaid
23.7k88 gold badges5555 silver badges7979 bronze badges
answered Oct 11 '08 at 21:01
Scott LanghamScott Langham
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What is the difference between '/' and '//' when used for division?
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In Python 3.x, 5 / 2 will return 2.5 and 5 // 2 will return 2. The former is floating point division, and the latter is floor division, sometimes also called integer division.
In Python 2.2 or later in the 2.x line, there is no difference...
Type converting slices of interfaces
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edited Apr 28 '17 at 15:23
answered Oct 5 '12 at 22:16
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PHP shell_exec() vs exec()
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356
shell_exec returns all of the output stream as a string. exec returns the last line of the outp...
Git: what is a dangling commit/blob and where do they come from?
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edited May 20 '15 at 7:30
answered Aug 29 '13 at 15:29
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What is the difference between the states selected, checked and activated in Android?
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answered Jan 10 '13 at 15:59
Martin HarveyMartin Harvey
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PostgreSQL return result set as JSON array?
...that looks like this:
{"a":[1,2,3], "b":["value1","value2","value3"]}
9.5 and up
We can leverage the json_build_object function:
SELECT
json_build_object(
'a', json_agg(t.a),
'b', json_agg(t.b)
)
FROM t
You can also aggregate the columns, creating a single row, and the...