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    <p>A <code>NSTextCheckingResult</code> has multiple items obtained by indexing into it.</p> <p><code>[match rangeAtIndex:0];</code> is the full match.<br> <code>[match rangeAtIndex:1];</code> (if it exists) is the first capture group match.<br> etc. </p> <p>You can use something like this:</p> <pre><code>NSString *searchedString = @"domain-name.tld.tld2"; NSRange searchedRange = NSMakeRange(0, [searchedString length]); NSString *pattern = @"(?:www\\.)?((?!-)[a-zA-Z0-9-]{2,63}(?&lt;!-))\\.?((?:[a-zA-Z0-9]{2,})?(?:\\.[a-zA-Z0-9]{2,})?)"; NSError *error = nil; NSRegularExpression* regex = [NSRegularExpression regularExpressionWithPattern: pattern options:0 error:&amp;error]; NSArray* matches = [regex matchesInString:searchedString options:0 range: searchedRange]; for (NSTextCheckingResult* match in matches) { NSString* matchText = [searchedString substringWithRange:[match range]]; NSLog(@"match: %@", matchText); NSRange group1 = [match rangeAtIndex:1]; NSRange group2 = [match rangeAtIndex:2]; NSLog(@"group1: %@", [searchedString substringWithRange:group1]); NSLog(@"group2: %@", [searchedString substringWithRange:group2]); } </code></pre> <p>NSLog output:</p> <blockquote> <p>match: domain-name.tld.tld2<br> domain-name<br> tld.tld2</p> </blockquote> <p>Do test that the match ranges are valid.</p> <p>More simply in this case:</p> <pre><code>NSString *searchedString = @"domain-name.tld.tld2"; NSRange searchedRange = NSMakeRange(0, [searchedString length]); NSString *pattern = @"(?:www\\.)?((?!-)[a-zA-Z0-9-]{2,63}(?&lt;!-))\\.?((?:[a-zA-Z0-9]{2,})?(?:\\.[a-zA-Z0-9]{2,})?)"; NSError *error = nil; NSRegularExpression* regex = [NSRegularExpression regularExpressionWithPattern:pattern options:0 error:&amp;error]; NSTextCheckingResult *match = [regex firstMatchInString:searchedString options:0 range: searchedRange]; NSLog(@"group1: %@", [searchedString substringWithRange:[match rangeAtIndex:1]]); NSLog(@"group2: %@", [searchedString substringWithRange:[match rangeAtIndex:2]]); </code></pre> <blockquote> <p>Swift 3.0:</p> </blockquote> <pre><code>let searchedString = "domain-name.tld.tld2" let nsSearchedString = searchedString as NSString let searchedRange = NSMakeRange(0, searchedString.characters.count) let pattern = "(?:www\\.)?((?!-)[a-zA-Z0-9-]{2,63}(?&lt;!-))\\.?((?:[a-zA-Z0-9]{2,})?(?:\\.[a-zA-Z0-9]{2,})?)" do { let regex = try NSRegularExpression(pattern:pattern, options: []) let matches = regex.matches(in:searchedString, options:[], range:searchedRange) for match in matches { let matchText = nsSearchedString.substring(with:match.range); print("match: \(matchText)"); let group1 : NSRange = match.rangeAt(1) let matchText1 = nsSearchedString.substring(with: group1) print("matchText1: \(matchText1)") let group2 = match.rangeAt(2) let matchText2 = nsSearchedString.substring(with: group2) print("matchText2: \(matchText2)") } } catch let error as NSError { print(error.localizedDescription) } </code></pre> <p>print output: </p> <blockquote> <p>match: domain-name.tld.tld2<br> matchText1: domain-name<br> matchText2: tld.tld2 </p> </blockquote> <p>More simply in this case:</p> <pre><code>do { let regex = try NSRegularExpression(pattern:pattern, options: []) let match = regex.firstMatch(in:searchedString, options:[], range:searchedRange) let matchText1 = nsSearchedString.substring(with: match!.rangeAt(1)) print("matchText1: \(matchText1)") let matchText2 = nsSearchedString.substring(with: match!.rangeAt(2)) print("matchText2: \(matchText2)") } catch let error as NSError { print(error.localizedDescription) } </code></pre> <p>print output: </p> <blockquote> <p>matchText1: domain-name<br> matchText2: tld.tld2 </p> </blockquote>
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    1. POHow to write regular expressions in Objective C (NSRegularExpression)?
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    1. POHow to write regular expressions in Objective C (NSRegularExpression)?
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    1. COmy code above currently displays all of the matched results (full match, domain-name, TLDs) and that works when I test that regex online but it returns only the first value (full match) when tested in Objective C.
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    2. COLooks like I have a problem with the "NSMutableString stringWithString" part because the regex doesn't match the same things online VS Objective C
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    3. COI'm sorry, you were right. Looks like I didn't understand how to obtain the results correctly. I'm a web developer at my core and Objective C just makes everything I try to do at least 2 times harder than it is in PHP :) Thanks again.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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