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How can I check if an argument is defined when starting/calling a batch file?
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The check for whether a commandline argument has been set can be [%1]==[], but, as Dave Costa ...
Array to Hash Ruby
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a = ["item 1", "item 2", "item 3", "item 4"]
h = Hash[*a] # => { "item 1" => "item 2", "item 3" => "item 4" }
That's it. The * is called the splat operator.
One caveat per @Mike Lewis (in the comments): "Be very careful with...
PHP best way to MD5 multi-dimensional array?
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13 Answers
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How can I sharpen an image in OpenCV?
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163
One general procedure is laid out in the Wikipedia article on unsharp masking:
You use a Gauss...
Convert light frequency to RGB?
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answered Sep 24 '09 at 15:47
Stephen MesaStephen Mesa
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Clojure 1.2.1/1.3/1.4 'proxy generated in Grails 2.0.0 runtime fails. 1.2.0 is fine
... working on extending the Grails Clojure plugin in Grails 2.0.0 (and 2.1.0-SNAPSHOT) and I wanted to update it to Clojure 1.3.0 and add clojure.tools.logging .
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How to access the last value in a vector?
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Speed up the loop operation in R
...on). The data.frame has roughly 850K rows. My PC is still working (about 10h now) and I have no idea about the runtime.
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Why does changing 0.1f to 0 slow down performance by 10x?
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Welcome to the world of denormalized floating-point! They can wreak havoc on performance!!!
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