return. control word is used in 明確 定義
(:),與exits 動詞, 副詞, or 連接詞.
result of an 明確 定義is result of last executed 句子 that was not in a test block. If re is no such executed 句子, result is i. 0 0 .
f=: 3 : 0 try. if. 0<:y. do. 'positive' return. else. t=.'negative' end. catch. t=.'caught' end. 'it is ',t ) f 7 positive f _12 it is negative f 'deipnosophist' it is caught (i.0 0) -: 3 : 'return.' 999 1 g=: 3 : 'if. 13=|y. do. ''triskaidekaphobia'' end.' g 13 triskaidekaphobia g 5 (i.0 0) -: g 5 1