import Foundation
let pattern = #"\b(?:[0-9],[1-9][0-9]+|0,[1-9]|1,[2-9]|2,[3-9]|3,[4-9]|4,[5-9]|5,[6-9]|6,[7-9]|7,[8-9]|8,9)\b"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
7,10
5,3
0,1
8,9
0,20
10,20
21,12
1,12
"""#
let stringRange = NSRange(location: 0, length: testString.utf16.count)
let matches = regex.matches(in: testString, range: stringRange)
var result: [[String]] = []
for match in matches {
var groups: [String] = []
for rangeIndex in 1 ..< match.numberOfRanges {
let nsRange = match.range(at: rangeIndex)
guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue }
let string = (testString as NSString).substring(with: nsRange)
groups.append(string)
}
if !groups.isEmpty {
result.append(groups)
}
}
print(result)
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression