chunk

Break ientries into chunks of given size.

function chunk(x, n, s)
// x: ientries
// n: chunk size [1]
// s: chunk step [n]

const ientries = require('extra-ientries');

var x = [
  ["a", 1], ["b", 2], ["c", 3], ["d", 4],
  ["e", 5], ["f", 6], ["g", 7], ["h", 8]
];
ientries.chunk(x, 3).map(x => [...x]);
// → [
// →   [ [ "a", 1 ], [ "b", 2 ], [ "c", 3 ] ],
// →   [ [ "d", 4 ], [ "e", 5 ], [ "f", 6 ] ],
// →   [ [ "g", 7 ], [ "h", 8 ] ]
// → ]

ientries.chunk(x, 2, 3).map(x => [...x]);
// → [
// →   [ [ "a", 1 ], [ "b", 2 ] ],
// →   [ [ "d", 4 ], [ "e", 5 ] ],
// →   [ [ "g", 7 ], [ "h", 8 ] ]
// → ]

ientries.chunk(x, 4, 3).map(x => [...x]);
// → [
// →   [ [ "a", 1 ], [ "b", 2 ], [ "c", 3 ], [ "d", 4 ] ],
// →   [ [ "d", 4 ], [ "e", 5 ], [ "f", 6 ], [ "g", 7 ] ],
// →   [ [ "g", 7 ], [ "h", 8 ] ]
// → ]

References

• List-Extra.groupsOf: elm
• iterable_chunk: PHP
• array_chunk: PHP
• str_split: PHP
• numpy.split: Python
• _.chunk: lodash
• Array.inGroupsOf: sugarjs
• Array.inGroups: sugarjs
• even-chunks: @addaleax
• chunk: @ryancole
• iterable.chunk: @zhiyelee
• chunk-iterable: @haio