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runOnUiThread in fragment
...es the Runnable if you're already on the main thread, otherwise it uses a Handler. You can implement a Handler in your fragment if you don't want to worry about the context of this, it's actually very easy:
// A class instance
private Handler mHandler = new Handler(Looper.getMainLooper());
// anyw...
How to define Gradle's home in IDEA?
I am trying to import a Gradle project into IntelliJ, and when I get to the Gradle Home textbox, it is not automatically populated, nor will typing in the path of Gradle Home result in a valid location - I have the GRADLE_USER_HOME environment variable set (to what I think is!) the correct pat...
How do I make a transparent canvas in html5?
...Canvases are transparent by default.
Try setting a page background image, and then put a canvas over it. If nothing is drawn on the canvas, you can fully see the page background.
Think of a canvas as like painting on a glass plate.
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How do I abort the execution of a Python script? [duplicate]
...exit with zero.
import sys
sys.exit("aa! errors!")
Prints "aa! errors!" and exits with a status code of 1.
There is also an _exit() function in the os module. The sys.exit() function raises a SystemExit exception to exit the program, so try statements and cleanup code can execute. The os._exit...
Write lines of text to a file in R
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@jhin I am not sure if that is true. Using RStudio 0.98 and R version 3.1.0 the file is created automatically if it doesn't exist
– JHowIX
Sep 10 '14 at 14:09
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AngularJS validation with no enclosing
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This helped me out too. I was pulling my hair out and stumbled over this. Thank you!
– Alex McCabe
Jan 23 '15 at 11:17
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Merge Images Side by Side(Horizontally)
...ide-by-side allowing you to adjust spacing between each image (-geometry), and the general layout (-tile).
montage [0-5].png -tile 5x1 -geometry +0+0 out.png
Other examples can be found on Montage Usage page
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Rails detect if request was AJAX
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Warning: this does not work on standard remote: true calls in newer Rails versions, as the necessary headers don't get set.
– Roland Studer
May 27 at 18:04
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Mapping over values in a python dictionary
...ues()))) is marginally shorter, but I have to think about what it's doing, and remind myself that yes, keys and values are iterated over in the same order if the dict doesn't change. I don't have to think at all about what the dictcomp is doing, and so it's the right answer.
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How do I set a conditional breakpoint in gdb, when char* x points to a string whose value equals “he
...x:20 if strcmp(y, "hello") == 0
20 is line number, x can be any filename and y can be any variable.
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