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Hexadecimal escape sequence
| Глоссарий ИТ-терминов |
In regular expressions, a backslash followed by the letter ‘x’ followed by a sequence of hexadecimal digits. it matches a character in the target sequence that has the value that is specified by the two digits.
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Hexadecimal, английский
- Шестнадцатиричный
- The base 16 number system (compare with binary). it is often used to express binary numbers in shorter strings than binary or octal. counting to 20 using two hex symbols: 01, 02, 03, 04, 05, 06, 07, 08, 09, 0a, 0b, 0c, 0d, 0e, 0f, 10, 11, 12, 13, 14. hex - short for hexadecimal.
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Word boundary, английский
In regular expressions, a boundary that occurs when the current character is at the beginning of the target string and is one of the word characters a-za-z0- 9_, or when the current character position is past the end of the target string and the last character in the string is one of the word characters, or when the current character is one of the word characters and the preceding character is not, or when the current character is not one of the word characters and the preceding character is.
Unicode escape sequence, английский
In regular expressions, a backslash followed by the letter ‘u’ followed by four hexadecimal digits. it matches a character in the target sequence that has the value that is specified by the four digits.
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