Object-c字符串处理函数
纪录下些许关于Objective-C字符串处理的函数；NSLog(@"字符串处理");
//获得字符串长度
NSString* str1=@"MAC OS Pro";
NSLog(@"长度是 %d",);
//两个字符串连接
NSString* str2=@"MAC OS Pro";
NSString* str3=@" Leopard";
NSString* str4=;
NSLog(str4,nil);
NSString* str5=;
NSLog(str5,nil);
//可修改字符串
NSMutableString* string=;
;
;
;
NSLog(string,nil);
//插入字符串
NSMutableString* string1=;
;
NSLog(string1,nil);
//删除字符串
NSMutableString* string2=;
;
NSLog(string2,nil);
//字符串比较
BOOL result;
result=;
NSLog(@"%d",result,nil);
//比较前置串与后置串
NSString* string3=@"Mac Pro";
NSString* string4=@"Mac OS";
//判断是否以Mac开头
result=;
NSLog(@"%d",result,nil);
//判断是否以OS结尾
result=;
NSLog(@"%d",result,nil);
NSString* string5=@"This is Mac OS X";
//检索字符串
NSRange range;
range=;
if (range.location!=NSNotFound)
{
//得到字符串的位置和长度
NSLog(@"%d,%d",range.location,range.length);
}
else
{
NSLog(@"没有发现",nil);
}
//抽取部分字符串
NSString* string6=@"This is Mac OS X";
NSString *nstr1,*nstr2,*nstr3;
//从开头抽取字符串
nstr1=;
NSLog(nstr1,nil);
//抽取末位位置的字符串
nstr2=;
NSLog(nstr2,nil);
//抽取指定范围的字符串
nstr3=;
NSLog(nstr3,nil);
//结果
2011-10-20 14:05:43.940 StringProcessing 字符串处理
2011-10-20 14:05:43.942 StringProcessing 长度是10
2011-10-20 14:05:43.943 StringProcessing MAC OS Pro Leopard
2011-10-20 14:05:43.943 StringProcessing MAC OS Pro 10
2011-10-20 14:05:43.944 StringProcessing Mac OS X
2011-10-20 14:05:43.945 StringProcessing Mac OS X
2011-10-20 14:05:43.945 StringProcessing 字符串
2011-10-20 14:05:43.946 StringProcessing 1
2011-10-20 14:05:43.946 StringProcessing 1
2011-10-20 14:05:43.947 StringProcessing 1
2011-10-20 14:05:43.947 StringProcessing 8,6
2011-10-20 14:05:43.948 StringProcessing This
2011-10-20 14:05:43.948 StringProcessing Mac OS X
2011-10-20 14:05:43.949 StringProcessing is
以备用到的时候查看
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