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Diffstat (limited to 'src/algebra/rule.spad.pamphlet')
| -rw-r--r-- | src/algebra/rule.spad.pamphlet | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/algebra/rule.spad.pamphlet b/src/algebra/rule.spad.pamphlet index ce3011bc..98e0ee8d 100644 --- a/src/algebra/rule.spad.pamphlet +++ b/src/algebra/rule.spad.pamphlet @@ -113,7 +113,7 @@ RewriteRule(Base, R, F): Exports == Implementation where -- appear?(x, [p1,...,pn]) is true if x appears as a variable in -- a composite pattern pi. appear?(x, l) == - for p in l | p ^= x repeat + for p in l | p ~= x repeat member?(x, variables p) => return true false |