diff options
Diffstat (limited to 'mrbgems/mruby-enum-ext/mrblib/enum.rb')
| -rw-r--r-- | mrbgems/mruby-enum-ext/mrblib/enum.rb | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/mrbgems/mruby-enum-ext/mrblib/enum.rb b/mrbgems/mruby-enum-ext/mrblib/enum.rb index 96249db28..b4ac67a5b 100644 --- a/mrbgems/mruby-enum-ext/mrblib/enum.rb +++ b/mrbgems/mruby-enum-ext/mrblib/enum.rb @@ -768,7 +768,12 @@ module Enumerable def zip(*arg, &block) result = block ? nil : [] - arg = arg.map{|a|a.to_a} + arg = arg.map do |a| + unless a.respond_to?(:to_a) + raise TypeError, "wrong argument type #{a.class} (must respond to :to_a)" + end + a.to_a + end i = 0 self.each do |*val| |