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How do I ALTER a PostgreSQL table and make a column unique?
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edited May 23 '17 at 12:02
Community♦
111 silver badge
answered Jan 22 '09 at 15:22
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Detect if a NumPy array contains at least one non-numeric value?
...ng and will work regardless of shape.
numpy.isnan(myarray).any()
Edit: 30x faster:
import timeit
s = 'import numpy;a = numpy.arange(10000.).reshape((100,100));a[10,10]=numpy.nan'
ms = [
'numpy.isnan(a).any()',
'any(numpy.isnan(x) for x in a.flatten())']
for m in ms:
print " %.2f s" ...
Append class if condition is true in Haml
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answered Aug 11 '10 at 0:50
Nathan Weizenbaum Nathan Weizenbaum
3,32611 gold badge1212 silver badges22 bronze badges
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How do I set a textbox's text to bold at run time?
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edited Jun 21 '10 at 22:58
answered Jun 21 '10 at 22:51
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Symfony 2 EntityManager injection in service
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answered Jul 22 '14 at 0:09
Chadwick MeyerChadwick Meyer
5,93366 gold badges3434 silver badges6262 bronze badges
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Rails where condition using NOT NIL
...Rails 3:
Foo.includes(:bar).where("bars.id IS NOT NULL")
ActiveRecord 4.0 and above adds where.not so you can do this:
Foo.includes(:bar).where.not('bars.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I prefer to leverage merge so that I...
What's the difference between the four File Results in ASP.NET MVC
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edited Apr 5 '19 at 21:10
johnnyRose
5,7831313 gold badges3838 silver badges5858 bronze badges
answere...
create multiple tag docker image
...st your image ids:
$ docker images
Then tag away:
$ docker tag 9f676bd305a4 ubuntu:13.10
$ docker tag 9f676bd305a4 ubuntu:saucy
$ docker tag eb601b8965b8 ubuntu:raring
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C++ inheritance - inaccessible base?
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edited Jul 17 '15 at 15:06
Barry
231k2525 gold badges441441 silver badges754754 bronze badges
answered...
How do you specify command line arguments in Xcode 4?
...cut cmd + < works too. (Default shortcut)
On Xcode 7 (updated), XCode 10.1
Shortcut : Shift + cmd + <
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