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Formula to determine brightness of RGB color
...ce (relative)
0.2126 * R + 0.7152 * G + 0.0722 * B
2nd picture - http://www.w3.org/TR/AERT#color-contrast
0.299 * R + 0.587 * G + 0.114 * B
3rd picture - HSP Color Model
sqrt(0.299 * R^2 + 0.587 * G^2 + 0.114 * B^2)
4th picture - WCAG 2.0 SC 1.4.3 relative luminance and contrast ratio form...
How to check if a database exists in SQL Server?
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input type=“submit” Vs button tag are they interchangeable?
...
http://www.w3.org/TR/html4/interact/forms.html#h-17.5
Buttons created with the BUTTON element function just like buttons created with the INPUT element, but they offer richer rendering possibilities: the BUTTON element may have ...
How to list all tags that contain a commit?
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How do I change column default value in PostgreSQL?
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Scala: join an iterable of strings
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Retrieving a List from a java.util.stream.Stream in Java 8
...String> myList = stream.collect(Collectors.toList());
from:
https://www.geeksforgeeks.org/collectors-tolist-method-in-java-with-examples/
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Git: copy all files in a directory from another branch
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Checking a Python module version at runtime
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My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())
...ove to the C+11 uniform initialization syntax if you can.
A a{};
http://www.stroustrup.com/C++11FAQ.html#uniform-init
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