我有一个字典,它包含一个对象但是返回nil。
// returns nil
(lldb) po [_contentRatings objectForKey:rating]
nil
// this is the rating string
(lldb) po rating
'=7+’
// using a literal string works
(lldb) po [_contentRatings objectForKey:@"'=7+'"]
5
它必须不喜欢引号,因为这不符合字符串相等:
(lldb) po @"'=7+'"
'=7+'
(lldb) po rating
'=7+’
(lldb) p (BOOL)[@"'=7+'" isEqualToString:rating]
(BOOL) $10 = NO