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-rw-r--r--stdlib/source/library/lux/data/collection/sequence.lux9
1 files changed, 5 insertions, 4 deletions
diff --git a/stdlib/source/library/lux/data/collection/sequence.lux b/stdlib/source/library/lux/data/collection/sequence.lux
index a7fa5cb75..10bbfa9d0 100644
--- a/stdlib/source/library/lux/data/collection/sequence.lux
+++ b/stdlib/source/library/lux/data/collection/sequence.lux
@@ -103,19 +103,20 @@
(let [[next x] (step init)]
(//.pending [x (unfold step next)])))
-(def: #export (filter predicate sequence)
+(def: #export (only predicate sequence)
(All [a] (-> (-> a Bit) (Sequence a) (Sequence a)))
(let [[head tail] (//.run sequence)]
(if (predicate head)
- (//.pending [head (filter predicate tail)])
- (filter predicate tail))))
+ (//.pending [head (only predicate tail)])
+ (only predicate tail))))
(def: #export (partition left? xs)
{#.doc (doc "Split a sequence in two based on a predicate."
"The left side contains all entries for which the predicate is #1."
"The right side contains all entries for which the predicate is #0.")}
(All [a] (-> (-> a Bit) (Sequence a) [(Sequence a) (Sequence a)]))
- [(filter left? xs) (filter (bit.complement left?) xs)])
+ [(..only left? xs)
+ (..only (bit.complement left?) xs)])
(implementation: #export functor
(Functor Sequence)