Generator: send function to a generator

Pass a function to a generator

the generator can receive a function as a value

let fn = function() {}; function* generatorFunction() { assert.equal(yield null, fn); // remember, don't touch this line } let iterator = generatorFunction(); iterator.next(); iterator.next();

pass a function to the iterator, which calls it

function* generatorFunction() { yield (yield 1)(); } var iterator = generatorFunction(); var iteratedOver = [iterator.next().value, iterator.next().value]; assert.deepEqual(iteratedOver, [1, 2]);

nesting yielded function calls

function* generatorFunction() { yield (yield (yield 1)()); } var iteratedOver = []; assert.deepEqual(iteratedOver, [1, 2, 3]);

Required Knowledge

• `let` declaration (Block scope)
• creation (Generator)
• iterator (Generator)
• yield expressions (Generator)
• send value to a generator (Generator)

Related Katas

Generator

• creation
• iterator
• yield expressions
• send value to a generator
• send function to a generator
• return inside a generator function

Difficulty Level

EXPERT

First Published

29 June 2015

Stats

3 tests to solve