unspread - nodef/extra-function GitHub Wiki

Generate a (first) parameter-collapsed version of a function.

Similar: spread, unspread.

function unspread(x)
// x: a function

const xfunction = require('extra-function');


var fn = xfunction.unspread(Math.min);
fn([7, 4, 9]);  // Math.min(7, 4, 9)
// → 4

var fn = xfunction.unspread((x, i, I) => x.slice(i, I));
fn([[1, 2, 3, 4], 2]);  // [1, 2, 3, 4].slice(2)
// → [3, 4]

References