我有一个哈希,将整数数组映射到整数.由于某种原因,哈希有一个键映射到多个值,如:
{[1,2]=>3, [1,2]=> 4}
我怎样才能防止这种情况发生？运行
for key, value in map
puts key.inspect + "=>" + value.inspect + ":" + key.hash.inspect
end
给我
[1, 2]=>11:11
[0, 4, 6, 8, 9]=>10:253
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]=>15:11189
[0, 3, 4, 6, 7, 8, 9]=>13:981
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]=>14:11189
[0, 1, 2, 4, 5, 6, 7, 8, 9]=>12:4661