Node LessThanOrEqual
rascal-1.0-SNAPSHOT
Synopsis
Less than or equal operator on node values.
Syntax
Exp₁ <= Exp₂
Types
Exp₁ | Exp₂ | Exp₁ <= Exp₂ |
|---|---|---|
node | node | bool |
Description
Comparison on nodes is defined by a lexicographic ordering. Node N = F(N₁, ..., Nₙ) is less than or equal node
N = G(M₁, ..., Mₘ) when:
- N is equal to M, or
- F is lexicographically less than G, or F is equal to G and
n < m.
Examples
rascal>"f"(10, "abc") <= "f"(10, "abc");
bool: true
rascal>"f"(10) <= "f"(10, "abc");
bool: true