rosylxf

摘要： 1,字符串的简单用法：#import <Foundation/Foundation.h>int main (int argc, const char * argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; //创建常量字符串 NSString* str=@"This is a string"; //获取字符串的长度 NSUInteger len=[str length]; NSLog(@"length=%lu", len); //result:16 .. 阅读全文