seq — read your data flow left to right

Lazy, chainable collection pipelines built on the standard library's iter.Seq / iter.Seq2, using Go 1.27 generic methods (golang/go#77273) to enable chained calls that change the element type.

Seq[T] is a defined type of iter.Seq[T] — zero-cost convertible, ready to feed into slices.Collect and maps.Keys. Zero third-party dependencies.

import "github.com/smallnest/seq"

seq.From([]int{1, 2, 3, 4}).
    Filter(func(n int) bool { return n%2 == 0 }).
    Map(strconv.Itoa).
    Collect() // ["2" "4"]