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validation custom message for rails 3
Rails has introduced new way to validate attributes inside model.
When I use
4 Answers
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Getting the return value of Javascript code in Selenium
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How to convert byte array to Bitmap
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The answer of Uttam didnt work for me. I just got null when I do:
Bitmap bitmap = BitmapFactory.decodeByteArray(bitmapdata, 0, bitmapdata.length);
In my case, bitmapdata only has the buffer of the pixels, so it is imposible for the function de...
What is a “memory stomp”?
... answered Dec 2 '12 at 12:43
David SchwartzDavid Schwartz
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Python mock multiple return values
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You can assign an iterable to side_effect, and the mock will return the next value in the sequence each time it is called:
>>> from unittest.mock import Mock
>>> m = Mock()
>>> m.side_effect = ['foo', 'bar', 'baz']
>>> m...
How do I reference a specific issue comment on github?
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Also note that this works identically for comments on commits (not just comments on issues).
– Jamie S
Feb 3 '18 at 1:51
add a...
What Computer Science concepts should I know? [closed]
...pers should be required to know:
Basic programming (including recursion, file I/O, formatted output, loops etc)
Object oriented design (including design patterns etc). You should be able to produce sensible OO designs as well as understanding the concepts.
Scripting and regexes.
Data structures --...
How to test a merge without actually merging first
...evelop on it many times.
On this point I lose the control over the exact files I changed and I will only know it when my feature were closed and my code go to develop.
In this case, a good way to know what modifications you did (not other from the merges) is using Sourcetree.
You must click with...
Removing white space around a saved image in matplotlib
...ne of a couple of aerofoil sections — without white margins — to a PDF file.
(Note that I used matplotlib inside an IPython notebook, with the -pylab flag.)
plt.gca().set_axis_off()
plt.subplots_adjust(top = 1, bottom = 0, right = 1, left = 0,
hspace = 0, wspace = 0)
plt.margins(0...
Will GetType() return the most derived type when called from the base class?
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