🔰composition
JS ⟩ objects ⟩ built-in ⟩ Generator ⟩ generator function ⟩ compostion
*zip() - zip iterables into a single generator function.
*interleave() - interleave the values of iterables.
*sequence() - yield values sequentially.
syntax：yield* <generator object>
⬆️ 需要： *list()
// ⭐️ composition of generator functions
function* alphaNumericCodes(){
yield* list(26, {start: 97}); // a..z // ⭐️ Note: use of `yield*`
yield* list(26, {start: 65}); // A..Z
yield* list(10, {start: 48}); // 0..9
}
// generator object -> array
[...alphaNumericCodes()]
.map(n => String.fromCharCode(n)) // array of codes -> array of characters
.join('') // 'a..zA..Z0..9'Last updated
Was this helpful?