summaryrefslogtreecommitdiff
path: root/hash.c
diff options
context:
space:
mode:
authornobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-11-09 12:27:26 (GMT)
committernobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-11-09 12:27:26 (GMT)
commit29862685c0acf3a40c6b1f9e8780cbbd86cba658 (patch)
tree64813c6d3e206f9ad51009a640750f26ce9e7231 /hash.c
parent50dbcf5f6d56b95fd1c240341b5b2615715b2720 (diff)
dig
* array.c (rb_ary_dig): new method Array#dig. * hash.c (rb_hash_dig): new method Hash#dig. * object.c (rb_obj_dig): dig in nested arrays/hashes. [Feature #11643] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52504 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'hash.c')
-rw-r--r--hash.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/hash.c b/hash.c
index c179ff4..ae65aa4 100644
--- a/hash.c
+++ b/hash.c
@@ -2691,6 +2691,29 @@ rb_hash_any_p(VALUE hash)
return ret;
}
+/*
+ * call-seq:
+ * hsh.dig(key, ...) -> object
+ *
+ * Retrieves the value object corresponding to the each <i>key</i>
+ * objects repeatedly.
+ *
+ * h = { foo: {bar: {baz: 1}}}
+ *
+ * h.dig(:foo, :bar, :baz) #=> 1
+ * h.dig(:foo, :zot) #=> nil
+ */
+
+VALUE
+rb_hash_dig(int argc, VALUE *argv, VALUE self)
+{
+ rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
+ self = rb_hash_aref(self, *argv);
+ if (!--argc) return self;
+ ++argv;
+ return rb_obj_dig(argc, argv, self, Qnil);
+}
+
static int path_tainted = -1;
static char **origenviron;
@@ -4114,6 +4137,7 @@ Init_Hash(void)
rb_define_method(rb_cHash,"compare_by_identity?", rb_hash_compare_by_id_p, 0);
rb_define_method(rb_cHash, "any?", rb_hash_any_p, 0);
+ rb_define_method(rb_cHash, "dig", rb_hash_dig, -1);
/* Document-class: ENV
*