ICU 74.2 74.2

Data Structures | Namespaces
regex.h File Reference

C++ API: Regular Expressions. More...

`#include "unicode/utypes.h"`
`#include "unicode/uobject.h"`
`#include "unicode/unistr.h"`
`#include "unicode/utext.h"`
`#include "unicode/parseerr.h"`
`#include "unicode/uregex.h"`

Go to the source code of this file.

## Data Structures
class | icu::RegexPattern
| Class `RegexPattern` represents a compiled regular expression. More...
class | icu::RegexMatcher
| class RegexMatcher bundles together a regular expression pattern and input text to which the expression can be applied. More...

## Namespaces
namespace | icu
| File coll.h.

## Detailed Description

C++ API: Regular Expressions.

The ICU API for processing regular expressions consists of two classes, `RegexPattern` and `RegexMatcher`. `RegexPattern` objects represent a pre-processed, or compiled regular expression. They are created from a regular expression pattern string, and can be used to create `RegexMatcher` objects for the pattern.

Class `RegexMatcher` bundles together a regular expression pattern and a target string to which the search pattern will be applied. `RegexMatcher` includes API for doing plain find or search operations, for search and replace operations, and for obtaining detailed information about bounds of a match.

Note that by constructing `RegexMatcher` objects directly from regular expression pattern strings application code can be simplified and the explicit need for `RegexPattern` objects can usually be eliminated.

Definition in file regex.h.