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lex_lt(+List1, +List2)

List1 is lexicographically less than List2
List of integers or domain variables
List of integers or domain variables


Imposes a lexicographic ordering between the two lists. I.e. either is the first element of List1 strictly smaller than the first element of List2, or the first elements are equal and the lexicographic order holds between the two list tails. A non-existing element (i.e. when the end of list is reached) is strictly smaller than any existing element.

See Also

ordered / 2, gfd : lex_lt / 2, ic_global : lex_lt / 2, fd_global_gac : lex_lt / 2, ic_global_gac : lex_lt / 2, lex_le / 2