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Node LessThan

rascal-0.40.17

Synopsis​

Less than operator on node values.

Syntax​

Exp₁ < Exp₂

Types​

Exp₁Exp₂Exp₁ < Exp₂
nodenodebool

Description​

Comparison on nodes is defined by a lexicographic ordering. Node N = F(N₁, ..., Nₙ) is less than node N = G(M₁, ..., Mₘ) when:

  • N is not equal to M, and
  • F is lexicographically less than G, or F is equal to G and n < m.

Examples​

rascal>"f"(10, "abc") < "g"(3);
bool: true
rascal>"f"(10) < "f"(10, "abc");
bool: true