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What does a double * (splat) operator do
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Ruby 2.0 introduced keyword arguments, and ** acts like *, but for keyword arguments. It returns a Hash with key / value pairs.
For this code:
def foo(a, *b, **c)
[a, b, c]
end
Here's a demo:
> foo 10
=> [10, [], {}]
&g...
Expanding tuples into arguments
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answered Jan 3 '10 at 2:24
Alex MartelliAlex Martelli
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Once upon a time, when > was faster than < … Wait, what?
...c old optimization where one frame you would use GL_LESS with a range of [0, 0.5]. Next frame, you render with GL_GREATER with a range of [1.0, 0.5]. You go back and forth, literally "flipping the sign of Z and the depth test" every frame.
This loses one bit of depth precision, but you didn't have...
How do I copy the contents of one stream to another?
...(it just doesn't waste a threads blocking on I/O completion).
From .NET 4.0 on, there's is the Stream.CopyTo method
input.CopyTo(output);
For .NET 3.5 and before
There isn't anything baked into the framework to assist with this; you have to copy the content manually, like so:
public static voi...
You have already activated rake 0.9.0, but your Gemfile requires rake 0.8.7
...update it.
– E.E.33
Nov 1 '11 at 16:09
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I had to add gem 'rake', 'version #' to my gemfile, and ...
SQL set values of one column equal to values of another column in the same table
...carusIcarus
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Converting PKCS#12 certificate into PEM using OpenSSL
...cs12 -in path.p12 -out newfile.crt.pem -clcerts -nokeys -passin 'pass:P@s5w0rD'
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Align inline-block DIVs to top of container element
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Because the vertical-align is set at baseline as default.
Use vertical-align:top instead:
.sma...
Any difference between First Class Function and High Order Function
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answered Apr 13 '12 at 13:07
zoulzoul
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Rails ActionMailer - format sender and recipient name/email address
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edited Nov 16 '16 at 0:03
Jonathan Allard
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a...