findCoordinates property

Future<List<String>> get findCoordinates

The findCoordinates extension uses a regular expression (coordinatesRegExp) to find coordinate pairs in the provided text. It matches coordinates in the format "(latitude, longitude)" with both positive and negative values for latitude and longitude.

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void main() {

String longText = """

Here are some coordinates:

(40.7128, -74.0060)

(34.0522, -118.2437)

(51.5074, -0.1278)

Don't forget (48.8566, 2.3522). """;

List

for (String coordinate in foundCoordinates) {

print(coordinate);

} }

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Implementation

Future<List<String>> get findCoordinates async {
  final RegExp coordinatesRegExp = RegExp(
    r'\((-?\d+(\.\d+)?),\s*(-?\d+(\.\d+)?)\)',
    caseSensitive: false,
    multiLine: true,
  );

  final Iterable<Match> matches = coordinatesRegExp.allMatches(this);

  final List<String> coordinates = [];

  for (Match match in matches) {
    coordinates.add(match.group(0)!);
  }

  return coordinates;
}