Coding under the Hammer
Archive for April, 2009
Does a NSString contain a substring ?
Apr 12th
Here is a little tip on how to tell if a string contains another string, using the underused data type NSRange.
NSRange gives the starting location and the length of a given value, and is often used with arrays and strings. On this occasion we will use it to find the range of a substring within another string. If the range has a location, it contains the given substring. The following code does just that.
NSRange textRange;
textRange =[string rangeOfString:substring];
if(textRange.location != NSNotFound)
{
//Does contain the substring
}
Making this a case insensitive compare is also very trivial, and can be done by lowercasing both strings
NSRange textRange;
textRange =[[string lowercaseString] rangeOfString:[substring lowercaseString]];
if(textRange.location != NSNotFound)
{
//Does contain the substring
}
Hello and Welcome
Apr 10th
Welcome to my blog about Cocoa programming and all things Apple. I’ll warn you this is going to get very geeky 