Add bifurcate, bifurcateBy

This commit is contained in:
Angelos Chalaris
2018-02-14 12:13:07 +02:00
parent c6db12bdfc
commit de77807dc9
8 changed files with 90 additions and 4 deletions

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@ -0,0 +1,6 @@
const bifurcateBy = (arr, fn) =>
arr.reduce((acc, val, i) => (acc[fn(val, i) ? 0 : 1].push(val), acc), [
[],
[],
]);
module.exports = bifurcateBy;

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const test = require('tape');
const bifurcateBy = require('./bifurcateBy.js');
test('Testing bifurcateBy', (t) => {
//For more information on all the methods supported by tape
//Please go to https://github.com/substack/tape
t.true(typeof bifurcateBy === 'function', 'bifurcateBy is a Function');
t.deepEqual(bifurcateBy([ 'beep', 'boop', 'foo', 'bar' ], x => x[0] === 'b'), [ ['beep', 'boop', 'bar'], ['foo'] ], 'Splits the collection into two groups');
//t.deepEqual(bifurcateBy(args..), 'Expected');
//t.equal(bifurcateBy(args..), 'Expected');
//t.false(bifurcateBy(args..), 'Expected');
//t.throws(bifurcateBy(args..), 'Expected');
t.end();
});