import Foundation
let pattern = #"(^\-?0[\,\.][0-9]{1,}$)|(^\-?[1-9][0-9]{1,}$)|(^[0-9]$)|(^\-?[1-9][0-9]{0,}[\,\.][0-9]{1,}$)|(^\-?[1-9]$)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
01
001
033
0000033
00000.2
00000000000000
01010101010
0000.0
aaa
???!!!!!
111%$$$$
-0
-
-100
-100.255
-10.25555
-1.2
-1335354.12
-22
-2
-1
-13353544366564547
-0.22222298
-0.2
-0,2989080
-6767676767676767677676767677676
-0.22
-123
-1
100.255
10.25555
1.2
1335354.12
22
2
1
13353544366564547
0.22222298
0.2
0,2989080
6767676767676767677676767677676
0
0.22
123
"""#
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