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ios nsstring

NSString *chnString = @"中文, 汉语";if ([chnString isEqualToString:@"中文, 汉语"]){ NSLog(@"Equal");}else NSLog(@"NOT Equal");if ([chnString isEqualToString:@"中文, 汉"]) NSLog(@"Equal");else NSLog(@"NOT Equal");

实际上,object-c中switch的参数只能是int,byte,char,short的类型.然而,我们经常要使用到NSString来作为参数,我在这里举例说明一种间接实现的方法.这个方法一眼看上去好像不灵活限制了NSString参数的个数,但话说回来,既然用到了

NSString *someString = @"some text"; uint8_t buffer[100]; memcpy(buffer, [someString UTF8String], [someString length]+1);

//有两种方法 NSString *originalString = @"I wanna go to the Rio Olympics"; //1.substringFromIndex: 从第18位字符开始到最后的字符的字符串截取 NSString *subfixString = [originalString substringFromIndex:18]; //2.substringWithRange: 从

iOS 就是NSString swift里面会有string

Byte数组-> NSData Byte byte[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23}; NSData *adata = [[NSData alloc] initWithBytes:byte length:24]; NSData-> NSString NSString *aString = [[NSString alloc] initWithD

1.已知类名@"SomeClassName",初始化此类的一个实例:Class someClass = NSClassFromString(@"SomeClassName");id obj = [[someClass alloc] init];比如想初始化个UILabelid obj = [[NSClassFromString(@"UILabel") alloc] init];NSLog

1、NSString相关 (1)NSDictionary转换成NSString://用字符将NSArray中的元素拼接起来 NSArray *array = [NSArray arrayWithObjects:@"hello",@"wo

NSString *String = [NSString StringWithFormat:@"%@",number];或者NSString *String = number.description;

char csz[] = "bacd";NSString *str = [NSString stringWithFormat:@"%s",csz];----------------------------------------------------------------------->>output: abcd

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