class
Match

A result from searching within a string.

A Match or an Iterable of Match objects is returned from Pattern matching methods.

The following example finds all matches of a RegExp in a String and iterates through the returned iterable of Match objects.

RegExp exp = new RegExp(r"(\w+)");
String str = "Parse my string";
Iterable<Match> matches = exp.allMatches(str);
for (Match m in matches) {
  String match = m.group(0);
  print(match);
}

The output of the example is:

Parse
my
string

Some patterns, regular expressions in particular, may record subtrings that were part of the matching. These are called groups in the Match object. Some patterns may never have any groups, and their matches always have zero groupCount.

Properties

int start
read-only
Returns the index in the string where the match starts.
int end
read-only
Returns the index in the string after the last character of the match.
int groupCount
read-only
Returns the number of captured groups in the match.
String input
read-only
The string on which this match was computed.
Pattern pattern
read-only
The pattern used to search in [input].

Constructors

Match()

Operators

operator [](int group) → String
Returns the string matched by the given group.

Methods

group(int group) → String
Returns the string matched by the given group.
groups(List<int> groupIndices) → List<String>
Returns a list of the groups with the given indices.