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Diffstat (limited to 'src/clojure/contrib/seq_utils.clj')
| -rw-r--r-- | src/clojure/contrib/seq_utils.clj | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/clojure/contrib/seq_utils.clj b/src/clojure/contrib/seq_utils.clj index d4c29c46..ad913f70 100644 --- a/src/clojure/contrib/seq_utils.clj +++ b/src/clojure/contrib/seq_utils.clj @@ -211,3 +211,13 @@ (cons (if (identical? x NIL) nil x) (drain)))))))))) +(defn positions + "Returns a lazy sequence containing the positions at which pred + is true for items in coll." + [pred coll] + (for [[idx elt] (indexed coll) :when (pred elt)] idx)) + + + + + |