type_constraints:类型约束

类型约束 用法 require "type_constraints" TypeConstraints . setup do type :Array do constraint -> v { v . kind_of? ( Array ) } end subtype :ArrayOfString , :Array do constraint -> v { v . all? ( ) { | v | v . kind_of? ( String ) } } end subtype :ArrayOfHisa , :ArrayOfString do constraint -> v { v . all? ( ) { | v | v === "5518" } } end end puts "testing Array" p TypeConstraints .