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- Metacharacter abstract "A metacharacter is a character that has a special meaning (instead of a literal meaning) to a computer program, such as a shell interpreter or a regular expression engine.In POSIX extended regular expressions, there are 14 metacharacters that must be preceded by a backslash "\" in order to drop their special meaning and be treated literally inside an expression: the open/close square brackets, "[" and "]"; the backslash "\"; the caret "^"; the dollar sign "$"; the period or dot "."; the vertical bar or pipe symbol "|"; the question mark "?"; the asterisk "*"; the plus-sign "+"; open/close curly braces, "{" and "}"; and open/close parenthesis, "(" and ")".If you want to use any of these characters as a literal in a regex, you need to escape them with a backslash. For example to match the arithmetic expression "(1+1)*3=6" with a regex, then the correct regex is "\(1\+1\)\*3=6". Otherwise, the parenthesis, plus-sign, and asterisk will have a special meaning.".
- Metacharacter wikiPageID "81959".
- Metacharacter wikiPageRevisionID "613403566".
- Metacharacter hasPhotoCollection Metacharacter.
- Metacharacter subject Category:Formal_languages.
- Metacharacter subject Category:Pattern_matching.
- Metacharacter subject Category:Programming_language_topics.
- Metacharacter type Abstraction100002137.
- Metacharacter type Communication100033020.
- Metacharacter type FormalLanguages.
- Metacharacter type Language106282651.
- Metacharacter type Message106598915.
- Metacharacter type ProgrammingLanguageTopics.
- Metacharacter type Subject106599788.
- Metacharacter type ProgrammingLanguage.
- Metacharacter type Software.
- Metacharacter type Work.
- Metacharacter type CreativeWork.
- Metacharacter type InformationEntity.
- Metacharacter type Thing.
- Metacharacter type Q386724.
- Metacharacter type Q7397.
- Metacharacter type Q9143.
- Metacharacter comment "A metacharacter is a character that has a special meaning (instead of a literal meaning) to a computer program, such as a shell interpreter or a regular expression engine.In POSIX extended regular expressions, there are 14 metacharacters that must be preceded by a backslash "\" in order to drop their special meaning and be treated literally inside an expression: the open/close square brackets, "[" and "]"; the backslash "\"; the caret "^"; the dollar sign "$"; the period or dot "."; the vertical bar or pipe symbol "|"; the question mark "?"; the asterisk "*"; the plus-sign "+"; open/close curly braces, "{" and "}"; and open/close parenthesis, "(" and ")".If you want to use any of these characters as a literal in a regex, you need to escape them with a backslash. ".
- Metacharacter label "Metacarácter".
- Metacharacter label "Metacharacter".
- Metacharacter label "Metazeichen".
- Metacharacter sameAs Metazeichen.
- Metacharacter sameAs Metacarácter.
- Metacharacter sameAs m.0l204.
- Metacharacter sameAs Q1415908.
- Metacharacter sameAs Q1415908.
- Metacharacter sameAs Metacharacter.
- Metacharacter wasDerivedFrom Metacharacter?oldid=613403566.
- Metacharacter isPrimaryTopicOf Metacharacter.