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RGB to hex and hex to RGB
...notation, i.e. #rrggbb. Your code is almost correct, except you've got the order reversed. It should be:
var decColor = red * 65536 + green * 256 + blue;
Also, using bit-shifts might make it a bit easier to read:
var decColor = (red << 16) + (green << 8) + blue;
...
Rails :dependent => :destroy VS :dependent => :delete_all
...e that these are implemented as callbacks, and Rails executes callbacks in order. Therefore, other similar callbacks may affect the :dependent behavior, and the :dependent behavior may affect other callbacks.
:destroy causes all the associated objects to also be destroyed.
:delete_all causes all t...
What to use instead of “addPreferencesFromResource” in a PreferenceActivity?
...ppy:
I'm a noob to android coding, and I'm not the greatest java fan.
In order to avoid the deprecated warning and to force Eclipse to allow me to compile I had to resort to annotations, but these seem to affect only classes or methods, so I had to move the code onto two new methods to take advant...
T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]
...r('"' + txt + '"', 1033, 0,0)
GROUP BY display_term
HAVING COUNT(*) > 1
ORDER BY Cnt DESC
Returns
display_term Cnt
------------------------------ -----------
the 3
brown 2
lorry 2
sea ...
How do I create a SHA1 hash in ruby?
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Need require 'digest/sha1' in order to use SHA1 method.
– Gus Shortz
May 16 '13 at 19:22
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Long vs Integer, long vs int, what to use and when?
...t answer the question, which is about the difference between Long and long etc.
– GreenAsJade
Jan 14 '19 at 9:10
No, i...
Switching to landscape mode in Android Emulator
... Mac users, you only need to use the fn key if the setting "Use all F1, F2 etc. keys as function keys" (under System Preferences -> Keyboard) is checked.
left-ctrl+F11on Windows 7
It works fine in Windows 7 for android emulator to change the landscape orientation to portrait and vice versa.
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How to link to specific line number on github
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You can you use permalinks to include code snippets in issues, PRs, etc.
References:
https://help.github.com/en/articles/creating-a-permanent-link-to-a-code-snippet
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Unable to modify ArrayAdapter in ListView: UnsupportedOperationException
... list containing names. This list should be modifiable (add, delete, sort, etc). However, whenever I tried to change the items in the ArrayAdapter, the program crashed, with java.lang.UnsupportedOperationException error. Here is my code:
...
Using Default Arguments in a Function
...ve everything. I suppose I will have to put a little more thought into the order of my default arguments then. Thanks!
– renosis
Feb 6 '12 at 20:48
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