Match class Null safety

A result from searching within a string.

A Match or an Iterable of Match objects is returned from the Pattern matching methods (Pattern.allMatches and Pattern.matchAsPrefix).

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

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

The output of the example is:

Parse
my
string

Some patterns, regular expressions in particular, may record substrings 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.

Implementers

Constructors

Match()

Properties

end → int
The index in the string after the last character of the match.
read-only
groupCount → int
Returns the number of captured groups in the match. [...]
read-only
hashCode → int
The hash code for this object. [...]
read-only, inherited
input → String
The string on which this match was computed.
read-only
pattern → Pattern
The pattern used to search in input.
read-only
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited
start → int
The index in the string where the match starts.
read-only

Methods

group(int group) → String?
The string matched by the given group. [...]
groups(List<int> groupIndices) → List<String?>
A list of the groups with the given indices. [...]
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toString() → String
A string representation of this object. [...]
inherited

Operators

operator ==(Object other) → bool
The equality operator. [...]
inherited
operator [](int group) → String?
The string matched by the given group. [...]