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정규표현식/스터디/메타문자사용하기

  1. /templete
  2. /
  3. //
  4. ///
  5. //
  6. //
  7. ///
  8. ///


1. (호)

.
[ \[
] \]
  • 해 활 .
. \.
\ \\
  • (\) (/) . .
........

2. (홍)


.
  • 트(ex : .)
  • (ex : [])

. .
\b
\f 페 (form feed)
\n
\r
\t 탭
\v

3. 형태 ()


. (classes of characters) . [0-9] = [0123456789] . [0-9] 편한 '\d' '\D' [^0-9] .

.

'\w' 포함하
'\W' .

.

3.1.


11213
A1C2E3
48075
48237
M1B4F2
90046
H1H2H2


\w\d\w\d\w\d

11213
A1C2E3
48075
48237
M1B4F2
90046
H1H2H2


.

... 확히 . .



'\s' '\S'

'\c' '\C'

16

'\x' 10 10 '\x0A' . '\n'

8

'\0' . '\011' '\t' .

* .



4.

  • .

4.1.

[:alnum:] [a-zA-Z0-9]
[:alpha:] [a-zA-Z]
[:blank:] [\t] .
[:cntrl:] . 0-31, 127
[:digit:] [0-9]
[:graph:] [:print:]
[:lower:] [a-z]
[:print:]
[:punct:] [:alnum:] [:cntrl:] 포함
[:space:] 포함한 [\f\n\r\t\v]
[:upper:] [A-Z]
[:xdigit:] 16 [a-fA-F0-9]

4.2.

  • HRGB
    • #[[:xdigit:]][[:xdigit:]][[:xdigit:]][[:xdigit:]][[:xdigit:]][[:xdigit:]]
    • . posix 표 :xdigit: .

5.

  • 2 3 , . .
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