求懂objective-c的大神解释下面这段话Also,object/category named pairs must be unique.Only one NSString Name Utili-ties category can exist in a given Objective-C namespace.This can be tricky because theObjective-C namespace is shared between

求懂objective-c的大神解释下面这段话Also,object/category named pairs must be unique.Only one NSString Name Utili-ties category can exist in a given Objective-C namespace.This can be tricky because theObjective-C namespace is shared between objective－c用格式化类打印输出 3.14的百分比和货币形式. 求大神解答 business objective的全英文解释 objective c和c的区别 objective-c与C++的区别 求25c选项的解释,呼叫生物大神 The ____ of the College English Tests is to help students learn English better,isn't it?A objective B subject C objecting D aiming这里应该选什么答案...又是一题任君选择的题目..求大伙解释.. 表达式求值objective-c 求大神解释下下面语句讲了些什么 Objective-C中enum的值这样定义是什么意思 求....下面的解释看不懂.... 求好看的动作片!求大神解释 objective的意思 objective的意思 求英语大神解答下面的题 求大神告诉我下面的这题咋做 objective objective