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def once.go

ezx@1.11.0.0 · src/pub/plan.bend:704

import ezx@1.11.0.0/src/pub/plan.bend as Plan
import Base
import ezx@1.11.0.0/src/lock/lock.bend as L

704# each string of a list once, where it first appears
705def once.go(xs: List<&2, String>, +seen: List<&2, String>) -> List<&2, String>:
706  match xs:
707    case []:
708      []
709    case +h <> t:
710      once.pick(L.seen.holds(seen, h), h, once.go(t, h <> seen))

Uses (4)

Used by (1)