What does metacharacter mean?
Definitions for metacharacter
metachar·ac·ter
This dictionary definitions page includes all the possible meanings, example usage and translations of the word metacharacter.
Wiktionary
metacharacternoun
A character used to signify something other than its literal form, such as the asterisk when used as a wildcard.
Wikipedia
Metacharacter
A metacharacter is a character that has a special meaning to a computer program, such as a shell interpreter or a regular expression (regex) engine. In POSIX extended regular expressions, there are 14 metacharacters that must be escaped (preceded by a backslash (\)) in order to drop their special meaning and be treated literally inside an expression: opening and closing square brackets ([ and ]); backslash (\); caret (^); dollar sign ($); period/full stop/dot (.); vertical bar/pipe symbol (|); question mark (?); asterisk (*); plus and minus signs (+ and -); opening and closing curly brackets/braces ({ and }); and opening and closing parentheses (( and )). For example, to match the arithmetic expression (1+1)*3=6 with a regex, the correct regex is \(1\+1\)\*3=6; otherwise, the parentheses, plus sign, and asterisk will have special meanings.
Wikidata
Metacharacter
A metacharacter is a character that has a special meaning to a computer program, such as a shell interpreter or a regular expression engine. In regular expressions, there are 11 metacharacters that must always be preceded by a backslash, \, to be used inside of the expression: The opening square bracket [, the backslash \, the caret ^, the dollar sign $, the period or dot ., the vertical bar or pipe symbol |, the question mark ?, the asterisk or star *, the plus sign +, the opening round bracket. If you want to use any of these characters as a literal in a regex, you need to escape them with a backslash. If you want to match 1+1=2, the correct regex is 1\+1=2. Otherwise, the plus sign will have a special meaning.
Numerology
Chaldean Numerology
The numerical value of metacharacter in Chaldean Numerology is: 4
Pythagorean Numerology
The numerical value of metacharacter in Pythagorean Numerology is: 8
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"metacharacter." Definitions.net. STANDS4 LLC, 2024. Web. 26 Apr. 2024. <https://www.definitions.net/definition/metacharacter>.
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