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Pure JavaScript: a function like jQuery's isNumeric() [duplicate]
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edited Aug 31 '18 at 18:18
Robert Harvey
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How to add an extra source directory for maven to compile and include in the build jar?
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145
You can use the Build Helper Plugin, e.g:
<project>
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<build>
<plugi...
How to check if hex color is “too black”?
...rceived brightness.
Assuming a six character colour:
var c = c.substring(1); // strip #
var rgb = parseInt(c, 16); // convert rrggbb to decimal
var r = (rgb >> 16) & 0xff; // extract red
var g = (rgb >> 8) & 0xff; // extract green
var b = (rgb >> 0) & 0xff;...
How does a UILabel's minimumScaleFactor work?
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answered Mar 4 '13 at 18:40
ScottScott
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Convert Data URI to File then append to FormData
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14 Answers
14
Active
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Best practices for in-app database migration for Sqlite
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112
I maintain an application that periodically needs to update a sqlite database and migrate old ...
How to check if a string is a valid hex color representation?
...d support for 3-character HEX codes, use the following:
/^#([0-9A-F]{3}){1,2}$/i.test('#ABC')
The only difference here is that
[0-9A-F]{6}
is replaced with
([0-9A-F]{3}){1,2}
This means that instead of matching exactly 6 characters, it will match exactly 3 characters, but 1 or 2 times. Al...
What are some uses of decltype(auto)?
In c++14 the decltype(auto) idiom is introduced.
2 Answers
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Python string.join(list) on object array rather than string array
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441
You could use a list comprehension or a generator expression instead:
', '.join([str(x) for x i...
What does “error: option --single-version-externally-managed not recognized” indicate?
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edited Oct 28 '17 at 22:05
ADTC
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answe...