summaryrefslogtreecommitdiff
path: root/hash.c
diff options
context:
space:
mode:
Diffstat (limited to 'hash.c')
-rw-r--r--hash.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/hash.c b/hash.c
index 85c6e85..d2ca057 100644
--- a/hash.c
+++ b/hash.c
@@ -3186,6 +3186,19 @@ hash_proc_call(VALUE key, VALUE hash, int argc, const VALUE *argv, VALUE passed_
return rb_hash_aref(hash, *argv);
}
+/*
+ * call-seq:
+ * hash.to_proc -> proc
+ *
+ * Returns a Proc which maps keys to values.
+ *
+ * h = {a:1, b:2}
+ * hp = h.to_proc
+ * hp.call(:a) #=> 1
+ * hp.call(:b) #=> 2
+ * hp.call(:c) #=> nil
+ * [:a, :b, :c].map(&h) #=> [1, 2, nil]
+ */
static VALUE
rb_hash_to_proc(VALUE hash)
{