Tag

#Iterators

Every article tagged Iterators, in one place.

2 articles
2 min of reading
04 Jul, 2026 last updated

Showing 2 articles

Modern JavaScript 1 min read

JavaScript Iterator Helpers: Lazy map, filter and take

Array methods create a whole new array at each step. Iterator helpers work on iterators instead and are lazy : values are processed one at a time, only as many as you need. The methods iterator.map(fn) iterator.filter(fn) iterator.take(n) iterator.drop(n) iter...

04 Jul, 2026 Author 338 32

Read article

Go 1 min read

Iterators in Go: Range Over Functions

Since Go 1.23, for range can loop over functions . This gives Go a standard way to write iterators for custom data structures, database rows or paginated APIs. The iterator types // package iter type Seq[V any] func(yield func(V) bool) type Seq2[K, V any] func...

11 May, 2026 Author 1.05K 32

Read article