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sofakingworld/Array.eachSlice

Last active October 16, 2017 13:45
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JavaScript analog of EachSlice from Ruby
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Array.eachSlice
Array.prototype.eachSlice = function(size=1) {
return Array(Math.ceil(this.length / size))
.fill()
.map(( _, idx) => {
return this.slice(idx * size, (1 + idx) * size)
})
}
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sofakingworld commented Oct 15, 2017 •
edited
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arr = [1,2,3,4,5,6,7,8,9,10,11,12,13]
arr.eachSlice(3); // => [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ], [ 10, 11, 12 ], [ 13 ] ]

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