class
RegExp

A regular expression pattern.

Regular expressions are Patterns, and can as such be used to match strings or parts of strings.

Dart regular expressions have the same syntax and semantics as JavaScript regular expressions. See http://ecma-international.org/ecma-262/5.1/#sec-15.10 for the specification of JavaScript regular expressions.

firstMatch is the main implementation method that applies a regular expression to a string and returns the first Match. All other methods in RegExp can build on it.

Use allMatches to look for all matches of a regular expression in a string.

The following example finds all matches of a regular expression in a string.

RegExp exp = new RegExp(r"(\w+)");
String str = "Parse my string";
Iterable<Match> matches = exp.allMatches(str);
Implements

Properties

String pattern
read-only
The source regular expression string used to create this RegExp.
bool isMultiLine
read-only
Whether this regular expression matches multiple lines.
bool isCaseSensitive
read-only
Whether this regular expression is case sensitive.

Constructors

RegExp(String source, {bool multiLine: false, bool caseSensitive: true})
Constructs a regular expression.

Methods

firstMatch(String input) → Match
Searches for the first match of the regular expression in the string input. Returns null if there is no match.
allMatches(String input, [int start = 0]) → Iterable<Match>
Returns an iterable of the matches of the regular expression on input.
hasMatch(String input) → bool
Returns whether the regular expression has a match in the string input.
stringMatch(String input) → String
Returns the first substring match of this regular expression in input.
matchAsPrefix(String string, [int start = 0]) → Match
inherited
Match this pattern against the start of string.