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How to check if hex color is “too black”?
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if (luma < 40) {
// pick a different colour
}
EDIT
Since May 2014 tinycolor now has a getBrightness() function, albeit using the CCIR601 weighting factors instead of the ITU-R ones above.
EDIT
The resulting luma value range is 0..255, where 0 is the darkest and 255 is the lightest. V...
How to check existence of user-define table type in SQL Server 2008?
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edited Mar 22 '10 at 20:03
answered Mar 22 '10 at 19:49
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How do I create a unique constraint that also allows nulls?
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SQL Server 2008 +
You can create a unique index that accept multiple NULLs with a WHERE clause. See the answer below.
Prior to SQL Server 2008
You cannot create a UNIQUE constraint and allow NULLs. You need set a default value of NEW...
Commands out of sync; you can't run this command now
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grep, but only certain file extensions
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edited Sep 21 at 20:19
andreagalle
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answered Sep 20 '12 at ...
Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but
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matlimatli
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When should I use the “strictfp” keyword in java?
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– Pascal Cuoq
Mar 18 '14 at 16:25
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Is it good practice to use the xor operator for boolean checks? [closed]
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edited Oct 20 '17 at 20:29
answered Oct 2 '08 at 2:59
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Why is it not advisable to have the database and web server on the same machine?
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answered Mar 18 '09 at 20:48
Mark BrackettMark Brackett
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How do I convert an object to an array?
... BenoitBenoit
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