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Last Updated: February 25, 2016
·
925
· jbilcke

Array::sample in CoffeeScript

Made this small one-liner for print-debugging insanely large arrays in the console:

Array::sample = (size=1) -> if @length then (@[i] for i in [0...@length] by Math.round @length / size) else @

Usage:

[0..1000000].sample 10

Will print:

[ 
 0,
 100000,
 200000,
 300000,
 400000,
 500000,
 600000,
 700000,
 800000,
 900000,
 1000000 
]

Warning: I did not handle the following case:

[0..10].sample 100

FATAL ERROR: JS Allocation failed - process out of memory

:)

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