Method: Hash#map_keys

Defined in:
ext/rmtools.cpp

#map_keys ⇒ Object

Hashes map methods that doesn’t make hash into array New hash may get shorter than source



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# File 'ext/rmtools.cpp', line 393

static VALUE rb_hash_map_keys(VALUE hash)
{
  VALUE new_hash = rb_hash_new();
  rb_hash_foreach(hash, (int (*)(ANYARGS))map_keys_i, new_hash);
  return new_hash;
}