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= RegularExpressions |
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== 참고 == |
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* https://opentutorials.org/course/909/5143 |
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* http://zvon.org/comp/r/tut-Regexp.html |
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* https://www.regexpal.com/ |
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== history == |
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[RegularExpressionsUsed] |
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== 문법 == |
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* 특정 케이스로 시작 : `^` |
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* Source [[[#!Text |
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who is who |
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]]] |
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* `^who` : who로 시작 |
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* `^w` : w로 시작 |
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* `^[a-zA-Z]` : 영문으로 시작 |
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* `^[0-9]` : 숫자로 시작 |
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* 특정 케이스로 끝 : `$` |
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* Source [[[#!Text |
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who is who |
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]]] |
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* `who$` : who 문자로 끝 |
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* `[a-zA-Z]$` : 영문으로 끝 |
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* `[0-9]$` : 숫자로 끝 |
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* 이스케이프 : `\` |
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* Source [[[#!Text |
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$12$ \-\ $25$ |
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]]] |
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* `\$` : $ 문자 찾기 |
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* `^\$` : $ 문자로 시작 |
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* `\$$` : $ 문자로 끝 |
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* `\\` : \ 문자 찾기 |
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* 모든 문자 : `.` |
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* Source [[[#!Text |
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Regular expressions are powerful!!! |
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O.K. |
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]]] |
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* `.` : 아무 문자 |
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* `...` : 아무 문자 3자리 |
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* `\..\.` : `.문자.` 케이스 찾기 |
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* 후보군 : `[]` |
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* `[]`는 문자 하나를 의미 |
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* Source [[[#!Text |
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How do you do? |
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]]] |
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* `[oyu]` : o,y,u 문자 찾기 |
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* `[dH].` : `d 또는 H` + 문자 하나 |
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* `[owy][yow].` : `o 또는 w 또는 y` + `y 또는 o 또는 w` |
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* 범위 : `-` |
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* `[]`는 문자 하나를 의미 |
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* Source [[[#!Text |
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ABCDEFGHIJKLMNOPQRSTUVWXYZ |
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abcdefghijklmnopqrstuvwxyz |
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0123456789 |
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]]] |
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* `[C-K]` : 대문자 C~K 문자 찾기 |
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* `[CDEFGHIJK]` : `C,D,E,F,G,H,I,J,K` 문자 찾기 |
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* `[a-d]` : `a,b,c,d` 문자 찾기 |
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* `[2-6]` : `2,3,4,5,6` 문자 찾기 |
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* `[C-Ka-d2-6]` : `C~K, a~d, 2~6` 문자 찾기 |
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* 부정 : `[^]` |
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* `^`이 `[]` 안에 있으면 not의 의미를 가짐 |
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* Source [[[#!Text |
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ABCDEFGHIJKLMNOPQRSTUVWXYZ |
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abcdefghijklmnopqrstuvwxyz |
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0123456789 |
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]]] |
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* `[^CDghi45]` : `C,D,g,h,i,4,5`이 아닌 문자 |
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* `[^W-Z]` : `W, X, Y, Z`가 아닌 문자 |
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* 서브패턴 : `(|)` |
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* Source [[[#!Text |
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Monday Tuesday Friday |
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]]] |
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* `(on|ues|rida)` : `on, ues, rida` 문자 찾기 |
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* `(Mon|Tues|Fri)day` : 중복으로 들어가는 day를 빼서 패턴을 간소화 시킴. |
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* `..(id|esd|nd)ay` : 중복으로 들어가는 day를 빼서 패턴을 간소화 시킴. |
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* 수량자 : `*, +, ?` |
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* `*` : `*` 앞에 등장하는 패턴이 0 ~ 여러개(있을 수 있고 없을 수 있다) |
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* `+` : `+` 앞에 등장하는 패턴이 1 ~ 여러개(하나 이상이 있어야 한다) |
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* `?` : `?` 앞에 등장하는 패턴이 0 ~ 1(없거나 하나만 있어야 한다) |
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107
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* Source [[[#!Text |
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108
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aabc abc bc |
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-@- *** -- "*" -- *** -@- |
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-@@@- * ** - - "*" -- * ** -@@@- |
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--XX-@-XX-@@-XX-@@@-XX-@@@@-XX-@@-@@- |
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]]] |
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* `a*b` : b앞에 a가 있거나 없는 케이스 |
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* `a+b` : b앞에 a가 하나 이상 있는 케이스 |
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* `a?b` : b앞에 a가 없거나 하나만 있는 케이스 |
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116
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* `[-@]*` : -, @가 있거나 없는 케이스 |
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117
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* `\*+` : *가 하나 이상인 케이스 |
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118
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* `-@+-` : 시작과 끝이 - 이면서 @가 하나 이상인 케이스 |
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* `[^ ]+` : 공백이 아닌 케이스 |
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120
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* `-X?XX?X` : -으로 시작하고 X로 끝나며 그 사이에 X가 있으며 X의 좌우로 X가 0~1개까지만 있는 케이스 |
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* `-@?@?@?-` : 시작과 끝이 -이고 @가 0~3개인 케이스 |
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* `[^@]@?@` : @가 아닌 문자로 시작하면서 @가 0~1개면서 @로 끝나는 케이스 |
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* 수량자 : `{숫자}` |
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* `{숫자}` : 중괄호 안의 숫자 만큼의 수량 |
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* `{숫자,숫자}` : 중괄호 안의 첫번째 숫자 ~ 두번째 숫자까지의 수량 |
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* `{숫자,}` : 중괄호 안의 첫번째 숫자 이상인 수량 |
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* Source [[[#!Text |
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One ring to bring them all and in the darkness bind them |
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]]] |
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* `.{5}` : 어떤 문자건 다섯 글자 |
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134
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* `[els]{1,3}` : e,l,s 글자들이 1~3개 사이인 글자 |
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* `[a-z]{3,}` : 소문자 영문들이 3개 이상인 글자 |
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* 수량자 : `{숫자}` |
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140
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* `{숫자}` : 중괄호 안의 숫자 만큼의 수량 |
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141
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* `{숫자,숫자}` : 중괄호 안의 첫번째 숫자 ~ 두번째 숫자까지의 수량 |
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* `{숫자,}` : 중괄호 안의 첫번째 숫자 이상인 수량 |
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143
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* Source [[[#!Text |
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One ring to bring them all and in the darkness bind them |
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]]] |
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* `.{5}` : 어떤 문자건 다섯 글자 |
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* `[els]{1,3}` : e,l,s 글자들이 1~3개 사이인 글자 |
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* `[a-z]{3,}` : 소문자 영문들이 3개 이상인 글자 |
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* `r.*` : r + 모든 문자(0~여러개) |
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* `r.*?` : r인 문자(*뒤에 ?가 붙으면 *의 의미가 0~여러개에서 0으로 변경됨.) |
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* `r.+` : r + 모든 문자(1~여러개) |
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* `r.+?` : r + 모든 문자 1개(+뒤에 ?가 붙으면 +의 의미가 1~여러개에서 1로 변경됨.) |
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* `r.?` : r + 모든 문자(0~1개) |
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* `r.??` : r인 문자(?뒤에 ?가 붙으면 ?의 의미가 0~1개에서 0으로 변경됨.) |
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* 단어 : `\w` |
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* 알파벳 + 숫자 + 언더바(_) |
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* Source [[[#!Text |
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A1 B2 c3 d_4 e:5 ffGG77--__-- |
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]]] |
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* `\w` : 단어 선택 |
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* `[a-z]\w*` : 소문자로 시작하면서 단어 |
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* `\w{5}` : 단어 다섯자리 |
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* 단어가 아닌 것 : `\W` |
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* not word |
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* Source [[[#!Text |
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AS _34:AS11.23 @#$ %12^* |
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]]] |
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* `\W` : 단어가 아닌것 선택 |
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* 공백 : `\s` |
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* Source [[[#!Text |
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Ere iron was found or tree was hewn, |
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When young was mountain under moon; |
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Ere ring was made, or wrought was woe, |
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It walked the forests long ago. |
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]]] |
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* `\s` : 공백 검색 |
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* 공백이 아닌것 : `\S` |
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* Source [[[#!Text |
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Ere iron was found or tree was hewn, |
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When young was mountain under moon; |
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Ere ring was made, or wrought was woe, |
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It walked the forests long ago. |
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]]] |
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* `\S` : 공백이 아닌 것 검색 |
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* 숫자 : `\d` |
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* Source [[[#!Text |
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Page 123; published: 1234 id=12#24@112 |
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]]] |
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* `\d` : 숫자인 것 |
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* 숫자가 아닌 것 : `\D` |
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* Source [[[#!Text |
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Page 123; published: 1234 id=12#24@112 |
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]]] |
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* `\D` : 숫자가 아닌 것 |
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* 단어의 경계? : `\b` |
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* Source [[[#!Text |
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Ere iron was found or tree was hewn, |
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When young was mountain under moon; |
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Ere ring was made, or wrought was woe, |
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It walked the forests long ago. |
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cat |
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concat |
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]]] |
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* `\b.` : 단어의 모든 시작 문자 |
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* `.\b` : 단어의 모든 끝 문자 |
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* `\bcat` : cat으로 시작하는 문자 |
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* `cat\b` : cat으로 끝나는 문자 |
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* 단어의 경계?가 아닌 : `\B` |
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* Source [[[#!Text |
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Ere iron was found or tree was hewn, |
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When young was mountain under moon; |
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Ere ring was made, or wrought was woe, |
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It walked the forests long ago. |
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cat |
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concat |
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]]] |
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* `\B.` : 단어의 모든 시작문자의 다음부터 검색 |
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* `.\B` : 단어의 모든 끝 문자 이전까지 검색 |
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* 시작과 끝 : `\A`, `\Z` |
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* Source [[[#!Text |
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Ere iron was found or tree was hewn, |
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When young was mountain under moon; |
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Ere ring was made, or wrought was woe, |
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It walked the forests long ago. |
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cat |
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concat |
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]]] |
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* `\A...` : 전체 문장의 시작 세글자 |
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* `^...` : 각 문장별 시작 세글자 |
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* `...\Z` : 전체 문장의 끝 세글자 |
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* `...$` : 각 문장별 끝 세글자 |