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Cannot create an NSPersistentStoreCoordinator with a nil model
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edited Mar 18 '13 at 11:03
rohan-patel
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How do I prompt for Yes/No/Cancel input in a Linux shell script?
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31 Answers
31
Active
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numpy: most efficient frequency counts for unique values in an array
...ncount(x)
ii = np.nonzero(y)[0]
And then:
zip(ii,y[ii])
# [(1, 5), (2, 3), (5, 1), (25, 1)]
or:
np.vstack((ii,y[ii])).T
# array([[ 1, 5],
[ 2, 3],
[ 5, 1],
[25, 1]])
or however you want to combine the counts and the unique values.
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AES vs Blowfish for file encryption
... figured a 16-round version would be sufficient -- so they doubled that to 32 rounds. The best attack currently known is effective against only 11 rounds. If the original question hadn't specifically restricted the choices to AES and Blowfish, and simply asked for the most secure, reasonably well-kn...
LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria
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Wai Ha Lee
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answered Nov 17 '09 at 0:04
Bryan MenardBryan...
Passing command line arguments to R CMD BATCH
...from the command line looks like
> Rscript myScript.R 5 100
[1] 98.46435 100.04626 99.44937 98.52910 100.78853
Edit:
Not that I'd recommend it, but ... using a combination of source() and sink(), you could get Rscript to produce an .Rout file like that produced by R CMD BATCH. One way w...
What does the @ symbol before a variable name mean in C#? [duplicate]
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30
With what is it any different than, say, an underscore?
– Vilx-
Jan 9 '09 at 20:15
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SQL SELECT WHERE field contains words
...lumn1 LIKE '%word1%'
OR column1 LIKE '%word2%'
OR column1 LIKE '%word3%'
If you need all words to be present, use this:
SELECT * FROM mytable
WHERE column1 LIKE '%word1%'
AND column1 LIKE '%word2%'
AND column1 LIKE '%word3%'
If you want something faster, you need to look into full tex...
Security of REST authentication schemes
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edited May 23 '17 at 12:02
Community♦
111 silver badge
answered May 11 '12 at 19:47
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Whether a variable is undefined [duplicate]
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312
jQuery.val() and .text() will never return 'undefined' for an empty selection. It always retu...