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How to check if the string is empty?
...ing, but you would also enter the if not myString: block if myString were None, 0, False etc. So if you aren't sure what type myString is, you should use if myString == "": to determine if it is an empty string as opposed to some other falsy value.
– Andrew Clark
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Android - Spacing between CheckBox and text
...erent drawables for the checkbox.
UPDATE - As people have recently mentioned in answers below, this behavior has apparently changed in Jelly Bean (4.2). Your app will need to check which version its running on, and use the appropriate method.
For 4.3+ it is simply setting padding_left. See htaf...
numpy: most efficient frequency counts for unique values in an array
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Update: The method mentioned in the original answer is deprecated, we should use the new way instead:
>>> import numpy as np
>>> x = [1,1,1,2,2,2,5,25,1,1]
>>> np.array(np.unique(x, return_counts=True)).T
array([[ 1, ...
How to name and retrieve a stash by name in git?
...completes successfully. When no <stash> is given, applies the latest one.
This is useful if the branch on which you ran git stash save has changed enough that git stash apply fails due to conflicts. Since the stash is applied on top of the commit that was HEAD at the time git stash was run, i...
Gitignore not working
... the files so they were already indexed, but thought I'd share in case someone else stumbles across this.
TLDR; If you haven't already committed the files and .gitignore still isn't being respected then check file encoding and, make sure its UTF8 and if that doesn't work then maybe try messing with...
Database Design for Tagging
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Mark: This one looks good: simple-talk.com/sql/t-sql-programming/… It's probably a re-published version of the one I referred to.
– Troels Arvin
Oct 31 '10 at 13:34
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How do I debug an MPI program?
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As someone else said, TotalView is the standard for this. But it will cost you an arm and a leg.
The OpenMPI site has a great FAQ on MPI debugging. Item #6 in the FAQ describes how to attach GDB to MPI processes. Read the whole ...
Can I use CASE statement in a JOIN condition?
...ply JOIN to both tables, and in your SELECT clause,
return data from the one that matches:
I suggest you to go through this link Conditional Joins in SQL Server and T-SQL Case Statement in a JOIN ON Clause
e.g.
SELECT *
FROM sys.indexes i
JOIN sys.partitions p
ON i....
How to scale an Image in ImageView to keep the aspect ratio
... layout_width to be fill_parent (which takes up the full width of the phone).
25 Answers
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What is :: (double colon) in Python when subscripting sequences?
...xes. This example does not cover native Python data structures like List).
One concrete example to rule them all...
Say we have a NumPy matrix that looks like this:
In [1]: import numpy as np
In [2]: X = np.arange(100).reshape(10,10)
In [3]: X
Out[3]:
array([[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9...