Example of character substitution using NSRegularExpression

NSRegularExpressionsExamplesubstitue.m

- (NSString *)grabData:(NSString *)searchTerm {
	// Setup an error to catch stuff in 
	NSError *error = NULL;
	//Create the regular expression to match against
	NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"\\s" options:NSRegularExpressionCaseInsensitive error:&error];
	// create the new string by replacing the matching of the regex pattern with the template pattern(whitespace)
	NSString *newSearchString = [regex stringByReplacingMatchesInString:searchTerm options:0 range:NSMakeRange(0, [searchTerm length]) withTemplate:@"%20"];	
	NSLog(@"New string: %@",newSearchString);
	return newSearchString;
}