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frostney/gist:5784526

Last active December 18, 2015 12:39
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Safe and fast alternative for deleting items from arrays and objects
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gistfile1.coffee
deleteItem = (obj, item) ->
if Array.isArray obj
i for i, num in obj when num isnt item
else
newObject = {}
newObject[key] = obj[key] for key of obj when key isnt item
newObject
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Performance tests:
Small array: http://jsperf.com/delete-vs-deleteitem-small-array
Small object: http://jsperf.com/delete-vs-deleteitem-small-object
Big array: http://jsperf.com/delete-vs-deleteitem-big-array
Operation speed: http://jsperf.com/delete-vs-deleteitem-operation-speed

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