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getting the screen density programmatically in android?
...the metrics.densityDpi property will be one of the DENSITY_xxx constants (120, 160, 213, 240, 320, 480 or 640 dpi).
If you need the actual lcd pixel density (perhaps for an OpenGL app) you can get it from the metrics.xdpi and metrics.ydpi properties for horizontal and vertical density respectively....
List to array conversion to use ravel() function
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237
Use numpy.asarray:
import numpy as np
myarray = np.asarray(mylist)
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What is the optimal length for an email address in a database?
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The maximum length of an email address is 254 characters.
Every email address is composed of two parts. The local part that comes before the '@' sign, and the domain part that follows it. In "user@example.com", the local part is "user", and the domain part is "examp...
Get the current fragment object
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256
Now at some point of time I need to identify which object is currently there
Call findFra...
Why does Ruby 1.9.2 remove “.” from LOAD_PATH, and what's the alternative?
The latest changesets to Ruby 1.9.2 no longer make the current directory . part of your LOAD_PATH . I have a non-trivial number of Rakefiles that assume that . is part of the LOAD_PATH , so this broke them (they reported "no such file to load" for all require statements that based off the proj...
Favicons - Best practices
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edited Mar 23 '16 at 15:16
answered May 23 '14 at 8:16
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How to configure Visual Studio to use Beyond Compare
...the proper path for your machine, including version number)
Arguments: %1 %2 /title1=%6 /title2=%7
If using Beyond Compare Professional (3-way Merge):
Extension: .*
Operation: Merge
Command: C:\Program Files\Beyond Compare 3\BComp.exe (replace with the proper path for your machine, including ver...
pycharm convert tabs to spaces automatically
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125
Change the code style to use spaces instead of tabs:
Then select a folder you want to conver...
What is the fastest or most elegant way to compute a set difference using Javascript arrays?
...if don't know if this is most effective, but perhaps the shortest
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(function(x) { return B.indexOf(x) < 0 })
console.log(diff);
Updated to ES6:
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(x => !B.includes(x) );
console.log(diff)...
How do you do relative time in Rails?
... i.e. if given a certain Time class, it can calculate "30 seconds ago" or "2 days ago" or if it's longer than a month "9/1/2008", etc.
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