[NSString substringToIndex]
Returns a new string containing the characters of the receiver up to, but not including, the one at a given index.
- (NSString *)substringToIndex:(NSUInteger)anIndex
Parameters
- anIndex
- An index. The value must lie within the bounds of the receiver, or be equal to the length of the receiver.
Return Value of [NSString substringToIndex]
A new string containing the characters of the receiver up to, but not including, the one at anIndex. If anIndex is equal to the length of the string, returns a copy of the receiver.
Example of [NSString substringToIndex]
NSString *param = nil;
NSRange start = [string rangeOfString:@"id=%"];
if (start.location != NSNotFound)
{
param = [string substringFromIndex:start.location + start.length];
NSRange end = [param rangeOfString:@"%"];
if (end.location != NSNotFound)
{
param = [param substringToIndex:end.location];
}
}
Example of [NSString substringToIndex]
NSString *fullString = /* obtain from somewhere */;
NSString *prefix = nil;
if ([fullString length] >= 3)
prefix = [fullString substringToIndex:3];
else
prefix = fullString;
Example of [NSString substringToIndex]
float inchesInField = [sizeField.text floatValue];
float shoeSize = inchesInField * 3 - 22;
NSMutableString *appendedShoeSize = [[NSMutableString alloc] initWithFormat:@"%.1f", shoeSize];
if ([appendedShoeSize hasSuffix:@".3"] || [appendedShoeSize hasSuffix:@".5"] || [appendedShoeSize hasSuffix:@".4"] || [appendedShoeSize hasSuffix:@".6"]) {
appendedShoeSize = [[appendedShoeSize substringToIndex:[appendedShoeSize length] - 2] mutableCopy];
[appendedShoeSize appendString:@" ½"];
}
if ([appendedShoeSize hasSuffix:@".0"] || [appendedShoeSize hasSuffix:@".1"] || [appendedShoeSize hasSuffix:@".2"]) {
appendedShoeSize = [[appendedShoeSize substringToIndex:[appendedShoeSize length] - 2] mutableCopy];
}