NSString小记

拼接：

NSArray *pathArray = [NSArray arrayWithObjects:@"here",  @"be", @"dragons", nil];  

NSLog(@"%@",[pathArray componentsJoinedByString:@" "]);

分割：

NSString* str = @"here be dragons";  

[str componentsSeparatedByString:@" "];  

for(NSString* s in str) NSLog(s);

去空格:

NSString

*number_temp = [number stringByReplacingOccurrencesOfString:@" " withString:@""];

转UTF-8:

NSString *bb = [s stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];