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Formula to determine brightness of RGB color
...olor was used. Each color is represented by 2x2 pixels, colors are sorted from darkest to lightest (left to right, top to bottom).
1st picture - 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
...
Method Syntax in Objective-C
...rows of a UIPickerView (slot machine UI on the iPhone) is being returned. From my understanding, the Method is called ' pickerView ', and returns an NSInteger.
...
Converting Mercurial folder to a Git repository
...hon2 ~/fast-export/hg-fast-export.sh -r /path/to/old/mercurial_repo. Apart from that, it worked flawlessly.
– Artur Czajka
Jan 31 '14 at 1:08
5
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What is the C++ function to raise a number to a power?
...s:
pow(float, float);
pow(float, int);
pow(double, double); // taken over from C
pow(double, int);
pow(long double, long double);
pow(long double, int);
Now you can't just do
pow(2, N)
with N being an int, because it doesn't know which of float, double, or long double version it should take, ...
Proper indentation for Python multiline strings
...anging indents" here... Especially because if you change the variable name from string to text or anything of a different length, then you now need to update the indentation of literally every single line of the multiline string just to get it to match up with the """ properly. Indentation strategy ...
How to log out user from web site using BASIC authentication?
Is it possible to log out user from a web site if he is using basic authentication?
22 Answers
...
“Eliminate render-blocking CSS in above-the-fold content”
...ake worse than better for 'normal' websites.
And not everything that comes from Google is the "holy grail" just because it comes from Google. And they themselves are not a good role model if you have a look at their HTML markup.
The best advice I could give you is:
Set width and height on repla...
Unable to understand useCapture parameter in addEventListener
...evel-3-Events-20031107/events.html#Events-phases
Below, content extracted from the link.
Phases
The event is dispatched following a path from the root of the tree to this target node. It can then be handled locally at the target node level or from any target's ancestors higher in the tree. The ev...
How to merge dictionaries of dictionaries?
... makes the "reduce" easier to explain]
ps in python 3, you will also need from functools import reduce
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Cryptic “Script Error.” reported in Javascript in Chrome and Firefox
...ain of the current page.
This behavior is intentional, to prevent scripts from leaking information to external domains. For an example of why this is necessary, imagine accidentally visiting evilsite.com, that serves up a page with <script src="yourbank.com/index.html">. (yes, we're pointin...