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oneliner-subset.r

Rebol [ Title: "Check if subset" Date: 19-Mar-2004 File: %oneliner-subset.r Purpose: {Tells you if set1 is a subset of set2. Works for both series! and bitset! values.} One-liner-length: 131 Version: 1.0.0 Author: ["Gregg Irwin" "Ladislav Mecir"] Library: [ level: 'intermediate platform: 'all type: [How-to FAQ one-liner function] domain: [dialects] tested-under: none support: none license: none see-also: none ] ] subset?: func [{Returns true if A is a subset of B; false otherwise.} a [series! bitset!] b [series! bitset!]] [empty? exclude a b] ; The no-doc, no-type version. Only 40 bytes. subset?: func [a b] [empty? exclude a b]
halt ;; to terminate script if DO'ne from webpage