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Debugging in Clojure? [closed]
...selected functions.
(use 'clojure.contrib.trace)
(defn fib[n] (if (< n 2) n (+ (fib (- n 1)) (fib (- n 2)))))
(dotrace [fib] (fib 3))
produces the output:
TRACE t4425: (fib 3)
TRACE t4426: | (fib 2)
TRACE t4427: | | (fib 1)
TRACE t4427: | | => 1
TRACE t4428: | | (fib 0...
How can I add new keys to a dictionary?
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edited Jun 11 at 8:28
cs95
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answered ...
Is there a way to pass optional parameters to a function?
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The Python 2 documentation, 7.6. Function definitions gives you a couple of ways to detect whether a caller supplied an optional parameter.
First, you can use special formal parameter syntax *. If the function definition has a formal p...
Too much data with var_dump in symfony2 doctrine2
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222
Replace var_dump() with the debug method dump() provided by Doctrine Common.
\Doctrine\Common...
Pointers in C: when to use the ampersand and the asterisk?
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622
You have pointers and values:
int* p; // variable p is pointer to integer type
int i; // integ...
Format output string, right alignment
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232
Try this approach using the newer str.format syntax:
line_new = '{:>12} {:>12} {:>...
Benchmarking (python vs. c++ using BLAS) and (numpy)
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jfsjfs
326k132132 gold badges818818 silver badges14381438 bronze badges
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List comprehension vs map
...n map needs a lambda:
$ python -mtimeit -s'xs=range(10)' 'map(lambda x: x+2, xs)'
100000 loops, best of 3: 4.24 usec per loop
$ python -mtimeit -s'xs=range(10)' '[x+2 for x in xs]'
100000 loops, best of 3: 2.32 usec per loop
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In PHP, what is a closure and why does it use the “use” identifier?
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answered Jun 30 '09 at 18:24
Andrew HareAndrew Hare
310k6363 gold badges611611 silver badges614614 bronze badges
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How to do what head, tail, more, less, sed do in Powershell? [closed]
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edited Mar 31 '16 at 5:42
answered Mar 13 '12 at 10:51
Jo...