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How is attr_accessible used in Rails 4?
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Why should I use Restify?
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Configuring so that pip install can work from github
...$ pip install git+ssh://git@github.com/myuser/foo.git
or
$ pip install git+https://github.com/myuser/foo.git@v123
or
$ pip install git+https://github.com/myuser/foo.git@newbranch
More info at https://pip.pypa.io/en/stable/reference/pip_install/#vcs-support
...
Remove padding or margins from Google Charts
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TFS checkin error - could not find file
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How do I uninstall a package installed using npm link?
...dis
To reinstall from your package.json:
npm unlink redis
npm install
https://www.tachyonstemplates.com/npm-cheat-sheet/#unlinking-a-npm-package-from-an-application
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Count number of matches of a regex in Javascript
... || []).length; // 0
(('a a a').match(/a/g) || []).length; // 3
Based on https://stackoverflow.com/a/48195124/16777 but fixed to actually work in zero-results case.
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How to use MySQL DECIMAL?
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What happens if you call erase() on a map element while iterating from begin to end?
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Formula to determine brightness of RGB color
...Luminance (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 rat...