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不及格的程序员-八神

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(lldb) po [success compare:@"yes"] 

$1 = 0 <nil>

(lldb) p [success compare:@"yes"] 

(int) $2 = 0

(lldb) p [success isEqualToString:@"yes"]  安全写法

(char) $3 = '\0'

(lldb) p success 

(NSString *) $4 = 0x00000000

(lldb) p [success compare:@"yes"] == 0 //NSOrderedSame

(bool) $5 = true

 

posted on 2013-02-22 16:53 不及格的程序员-八神 阅读(...) 评论(...) 编辑 收藏