add type check in Hash#merge!

2026-06-08 16:11:16 +00:00 · 2013-05-03 23:36:02 +03:00
parent 7d134d941b
commit 17eef070da
1 changed files with 1 additions and 0 deletions
@@ -1,5 +1,6 @@
 class Hash
  def merge!(other, &block)
+    raise "can't convert argument into Hash" unless other.respond_to?(:to_hash)
    if block
      other.each_key{|k|
        self[k] = (self.has_key?(k))? block.call(k, self[k], other[k]): other[k]