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How to play with Control.Monad.Writer in haskell?
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Rails: how do I validate that something is a boolean?
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Since Rails 3, you can do:
validates :field, inclusion: { in: [ true, false ] }
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View's SELECT contains a subquery in the FROM clause
... penalties.
– miguelcobain
Jan 18 '13 at 16:22
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How to toggle a boolean?
... JordanJordan
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Why does Azure deployment take so long?
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Overriding class constants vs properties
...always refers to the class it is being executed in. If you are using php5.3+ you might try static::TEST as static:: is inheritance-aware.
The difference is that static:: uses "late static binding". Find more information here:
http://php.net/manual/en/language.oop5.late-static-bindings.php
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Git: Set up a fetch-only remote?
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edited Apr 22 '15 at 20:31
gunr2171
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How do I write a “tab” in Python?
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answered Dec 20 '10 at 10:07
SimoneSimone
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How to convert a selection to lowercase or uppercase in Sublime Text
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answered Sep 12 '13 at 20:36
arturomparturomp
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How to add an extra column to a NumPy array
...p.random.rand(N,N)
b = np.zeros((N,N+1))
b[:,:-1] = a
And timings:
In [23]: N = 10
In [24]: a = np.random.rand(N,N)
In [25]: %timeit b = np.hstack((a,np.zeros((a.shape[0],1))))
10000 loops, best of 3: 19.6 us per loop
In [27]: %timeit b = np.zeros((a.shape[0],a.shape[1]+1)); b[:,:-1] = a
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