Downloaded 13 times
![デリミタ
エスケープシーケンス
/^hoge/[a-z]{1}$/
メタ文字](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-15-2048.jpg)
![[ ]
{ }
( )
｜
文字の集合
量指定子
グループ
または](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-21-2048.jpg)
![[a-z] aからz
[a-zA-Z] aからz + AからZ
[0-9] 0から9
[ac] aとc
[^ac] aとcを含まない
(abc) abc文字列
(ab|cd) abもしくはcd](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-22-2048.jpg)
![最小マッチ
"aaaa".scan(/a+?/)
=> ["a", "a", "a", "a"]
"aaaa".scan(/a+/)
=> ["aaaa"]](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-24-2048.jpg)
![/abc/i =~ "ABC"
=> 0
"abnc".scan(/.+/)
=> ["ab", "c"]
"abnc".scan(/.+/m)
=> ["abnc"]](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-26-2048.jpg)
!["foobar".scan(/foo(?=bar)/)
=> ["foo"]
"foobar".scan(/foo(?!bar)/)
=> []
"foobar".scan(/(?<=foo)bar/)
=> ["bar"]
"foobar".scan(/(?<!foo)bar/)
=> []](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-29-2048.jpg)
![abcで始まる
"abchoge".scan(/^abc.*/)
=> [["abc"]]](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-32-2048.jpg)
![abcで始まらない！
"abchogenpiyo".scan(/^(abc).*/)
=> ["piyo"]](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-33-2048.jpg)
![function validate_email($email, $strict = true) {
$dot_string = $strict ?
'(?:[A-Za-z0-9!#$%&*+=?^_`{|}~'/-]|(?<!.|A).(?!.|@))' :
'(?:[A-Za-z0-9!#$%&*+=?^_`{|}~'/.-])'
;
$quoted_string = '(?:|"|?[A-Za-z0-9!#$%&*+=?^_`{|}~()<>[]:;@,. '/-])';
$ipv4_part = '(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])';
$ipv6_part = '(?:[A-fa-f0-9]{1,4})';
$fqdn_part = '(?:[A-Za-z](?:[A-Za-z0-9-]{0,61}?[A-Za-z0-9])?)';
$ipv4 = "(?:(?:{$ipv4_part}.){3}{$ipv4_part})";
$ipv6 = '(?:' .
"(?:(?:{$ipv6_part}:){7}(?:{$ipv6_part}|:))" . '|' .
"(?:(?:{$ipv6_part}:){6}(?::{$ipv6_part}|:{$ipv4}|:))" . '|' .
"(?:(?:{$ipv6_part}:){5}(?:(?::{$ipv6_part}){1,2}|:{$ipv4}|:))" . '|' .
"(?:(?:{$ipv6_part}:){4}(?:(?::{$ipv6_part}){1,3}|(?::{$ipv6_part})?:{$ipv4}|:))" . '|' .
"(?:(?:{$ipv6_part}:){3}(?:(?::{$ipv6_part}){1,4}|(?::{$ipv6_part}){0,2}:{$ipv4}|:))" . '|' .
"(?:(?:{$ipv6_part}:){2}(?:(?::{$ipv6_part}){1,5}|(?::{$ipv6_part}){0,3}:{$ipv4}|:))" . '|' .
"(?:(?:{$ipv6_part}:){1}(?:(?::{$ipv6_part}){1,6}|(?::{$ipv6_part}){0,4}:{$ipv4}|:))" . '|' .
"(?::(?:(?::{$ipv6_part}){1,7}|(?::{$ipv6_part}){0,5}:{$ipv4}|:))" .
')';
$fqdn = "(?:(?:{$fqdn_part}.)+?{$fqdn_part})";
$local = "({$dot_string}++|("){$quoted_string}++")";
$domain = "({$fqdn}|[{$ipv4}]|[{$ipv6}]|[{$fqdn}])";
$pattern = "/A{$local}@{$domain}z/";
return preg_match($pattern, $email, $matches) &&
(
!empty($matches[2]) && !isset($matches[1][66]) && !isset($matches[0][256]) ||
!isset($matches[1][64]) && !isset($matches[0][254])
)
;
}
参照：http://qiita.com/mpyw/items/257eabe0b43b1e02e6f7](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-37-2048.jpg)
![HTML5
input[type=email]
/^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9]
(?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?
(?:.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/
参照：http://www.w3.org/TR/html5/forms.html#valid-e-mail-address](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-40-2048.jpg)
![郵便番号
"123-4567".scan(/([d]{3})-([d]{4})/)
"123-4567".scan(/([0-9]{3})-([0-9]{4})/)
=> [["123", "4567"]]](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-41-2048.jpg)
![HTMLタグの中身
"<p>hoge</p><p>piyo</p>".scan(/<p>(.+?)</p>/)
=> [["hoge"], ["piyo"]]](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-42-2048.jpg)
![HTTP URI
"http://hoge.com/piyo" =~ %r{https?:(//(([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=])*@)?([(([0-9a-f]{1,4}:){6}([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-
4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|::([0-9a-f]{1,4}:){5}([0-9a-f]{1,4}:[0-
9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|([0-
9a-f]{1,4})?::([0-9a-f]{1,4}:){4}([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-
4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|(([0-9a-f]{1,4}:)?[0-9a-f]{1,4})?::([0-9a-f]{1,4}:){3}([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-
4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|(([0-9a-f]{1,4}:){0,2}[0-9a-f]{
1,4})?::([0-9a-f]{1,4}:){2}([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-
5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|(([0-9a-f]{1,4}:){0,3}[0-9a-f]{1,4})?::[0-9a-f]{1,4}:([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0-
5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|(([0-9a-f]{1,4}:){0,4}[0-9a-f]{1,4})?::([0-9a-f]{
1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-
4]d|25[0-5]))|(([0-9a-f]{1,4}:){0,5}[0-9a-f]{1,4})?::[0-9a-f]{1,4}|(([0-9a-f]{1,4}:){0,6}[0-9a-f]{1,4})?::|v[0-9a-f]+.[!$&-.0-;=_a-z~]+)]|(d|[1-9]d|1d{2}|2[0-
4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5])|([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-
,;=])*)(:d*)?(/([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=@])*)*|/(([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=@])+(/([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-
,:;=@])*)*)?|([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=@])+(/([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=@])*)*)?(?([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-
,/:;=?@])*)?(#([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,/:;=?@])*)?}](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-43-2048.jpg)
![HTTP URI
"http://hoge.com/" =~
%r{(?:http|https)://[^s<u00A0"]+}ix
=> 0](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-45-2048.jpg)
![for (1..100) {
s/(?<=[05])$/Buzz/;
s/^([0369]|[147]([0369]|[147][0369]*[258])*
([258]|[147][0369]*[147])|
[258]([0369]|[258][0369]*[147])*
([147]|[258][0369]*[258]))+Buzz$/FizzBuzz/;
s/^([0369]|[147]([0369]|[147][0369]*[258])*
([258]|[147][0369]*[147])|
[258]([0369]|[258][0369]*[147])*
([147]|[258][0369]*[258]))+$/Fizz/;
s/d+(?=D)//;
print "$_n";
}](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-48-2048.jpg)
![for (1..100) {
s/(?<=[05])$/Buzz/;
s/^([0369]|[147]([0369]|[147][0369]*[258])*
([258]|[147][0369]*[147])|
[258]([0369]|[258][0369]*[147])*
([147]|[258][0369]*[258]))+Buzz$/FizzBuzz/;
s/^([0369]|[147]([0369]|[147][0369]*[258])*
([258]|[147][0369]*[147])|
[258]([0369]|[258][0369]*[147])*
([147]|[258][0369]*[258]))+$/Fizz/;
s/d+(?=D)//;
print "$_n";
}
5の倍数の時、Buzzを追加
Buzzがあって、
かつ3の倍数の時残ったFizzBuzz 3の倍数をFizzに
最後に必要ない数値を削除](https://image.slidesharecdn.com/random-141119233801-conversion-gate01/75/slide-49-2048.jpg)
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正規表現勉強会
- 1.
- 2. さくらば＠ZARU 株式会社ベーシック＆株式会社フルセイル TwitterとQiita、やってます カレーと寿司とラーメンが好き プログラミングが好き どんな言語も好きだけど、JavaScriptが大好き 娘、産まれて育ってます
- 4.
- 5.
- 6.
- 7.
- 8. 一つの問題に直面するとき、 「そうだ。正規表現を使おう。」 と考える人たちは、二つの問題に直面する。 Jamie Zawinski “ ”
- 9.
- 10.
- 11. 色々あります。 POSIX ->標準規格 PCRE -> Perl 鬼車-> Ruby Re2 -> Google GNU Regex -> Unix
- 12.
- 13. ／） ／／／） ／,.=ﾞ''"／ ／ i f ,.r='"-‐'つ＿＿＿_ こまけぇこたぁいいんだよ！！ / / _,.-‐'~／⌒ ⌒＼ ／ ,i ,二ﾆ⊃（ ●）. （●）＼ / ﾉilﾞフ::::::⌒（__人__）⌒::::: ＼ ,ｲ｢ﾄ､,!,!| |r┬-| | / iﾄヾヽ_/ｨ"＼ `ー'´ ／
- 14.
- 15.
- 16.
- 17. ^ 行頭 $行末 A 行頭 z 行末 改行を含む
- 18. /^hoge$/ =~ "hogen" => 0 /Ahogez/ =~ "hogen" => nil
- 19. ． ＊ ＋ ？ 改行を除くすべての文字 0回以上の繰り返し 1回以上の繰り返し 0または1回or最小マッチ
- 20. /a*b+c?/ =~ "b" => 0 /a*b+c?/ =~ "aabbc" => 0 /a*b+c?/ =~ "cc" => nil
- 21. [ ] {} ( ) ｜ 文字の集合 量指定子 グループ または
- 22. [a-z] aからz [a-zA-Z]aからz + AからZ [0-9] 0から9 [ac] aとc [^ac] aとcを含まない (abc) abc文字列 (ab|cd) abもしくはcd
- 23. {n, m} n回以上、m回以下 {n, } n回以上 {n} n回
- 24. 最小マッチ "aaaa".scan(/a+?/) =>["a", "a", "a", "a"] "aaaa".scan(/a+/) => ["aaaa"]
- 25. /i /m /u オプション 大文字小文字区別しない .が改行にもマッチ 文字コードUTF-8
- 26. /abc/i =~ "ABC" => 0 "abnc".scan(/.+/) => ["ab", "c"] "abnc".scan(/.+/m) => ["abnc"]
- 27.
- 28. 肯定的先読み(?=pattern) 否定的先読み(?!pattern) 肯定的後読み(?<=pattern) 否定的後読み(?<!pattern)
- 29. "foobar".scan(/foo(?=bar)/) => ["foo"] "foobar".scan(/foo(?!bar)/) => [] "foobar".scan(/(?<=foo)bar/) => ["bar"] "foobar".scan(/(?<!foo)bar/) => []
- 30.
- 31.
- 32. abcで始まる "abchoge".scan(/^abc.*/) =>[["abc"]]
- 33.
- 34.
- 35.
- 36.
- 37. function validate_email($email, $strict= true) { $dot_string = $strict ? '(?:[A-Za-z0-9!#$%&*+=?^_`{|}~'/-]|(?<!.|A).(?!.|@))' : '(?:[A-Za-z0-9!#$%&*+=?^_`{|}~'/.-])' ; $quoted_string = '(?:|"|?[A-Za-z0-9!#$%&*+=?^_`{|}~()<>[]:;@,. '/-])'; $ipv4_part = '(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])'; $ipv6_part = '(?:[A-fa-f0-9]{1,4})'; $fqdn_part = '(?:[A-Za-z](?:[A-Za-z0-9-]{0,61}?[A-Za-z0-9])?)'; $ipv4 = "(?:(?:{$ipv4_part}.){3}{$ipv4_part})"; $ipv6 = '(?:' . "(?:(?:{$ipv6_part}:){7}(?:{$ipv6_part}|:))" . '|' . "(?:(?:{$ipv6_part}:){6}(?::{$ipv6_part}|:{$ipv4}|:))" . '|' . "(?:(?:{$ipv6_part}:){5}(?:(?::{$ipv6_part}){1,2}|:{$ipv4}|:))" . '|' . "(?:(?:{$ipv6_part}:){4}(?:(?::{$ipv6_part}){1,3}|(?::{$ipv6_part})?:{$ipv4}|:))" . '|' . "(?:(?:{$ipv6_part}:){3}(?:(?::{$ipv6_part}){1,4}|(?::{$ipv6_part}){0,2}:{$ipv4}|:))" . '|' . "(?:(?:{$ipv6_part}:){2}(?:(?::{$ipv6_part}){1,5}|(?::{$ipv6_part}){0,3}:{$ipv4}|:))" . '|' . "(?:(?:{$ipv6_part}:){1}(?:(?::{$ipv6_part}){1,6}|(?::{$ipv6_part}){0,4}:{$ipv4}|:))" . '|' . "(?::(?:(?::{$ipv6_part}){1,7}|(?::{$ipv6_part}){0,5}:{$ipv4}|:))" . ')'; $fqdn = "(?:(?:{$fqdn_part}.)+?{$fqdn_part})"; $local = "({$dot_string}++|("){$quoted_string}++")"; $domain = "({$fqdn}|[{$ipv4}]|[{$ipv6}]|[{$fqdn}])"; $pattern = "/A{$local}@{$domain}z/"; return preg_match($pattern, $email, $matches) && ( !empty($matches[2]) && !isset($matches[1][66]) && !isset($matches[0][256]) || !isset($matches[1][64]) && !isset($matches[0][254]) ) ; } 参照：http://qiita.com/mpyw/items/257eabe0b43b1e02e6f7
- 38. ＿＿＿_ ／:::::::::: u＼ ／:::::::::⌒ 三. ⌒＼ ／:::::::::: （ ○）三（○）＼ |::::::::::::::::⌒（__人__）⌒ | ＿＿＿＿＿＿＿__ ＼:::::::::: ｀ ⌒´ ,／. | | | ノ::::::::::u ＼ | | | . ／:::::::::::::::: u | | | |::::::::::::: ｌ u | | | ヽ::::::: -一ー_~､⌒)^),-､|_|＿＿＿＿＿＿＿| ヽ::::::::＿＿＿,ノγ⌒ヽ)二二二| | |
- 39. RFC5321/5322 Abc@example.com Abc.123@example.com user+mailbox/department=shipping@example.com !#$%&'*+-/=?^_`.{|}~@example.com "Abc@def"@example.com "Fred Bloggs"@example.com "Joe.Blow"@example.com 参照：http://ja.wikipedia.org/wiki/メールアドレス
- 40. HTML5 input[type=email] /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9] (?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])? (?:.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/ 参照：http://www.w3.org/TR/html5/forms.html#valid-e-mail-address
- 41. 郵便番号 "123-4567".scan(/([d]{3})-([d]{4})/) "123-4567".scan(/([0-9]{3})-([0-9]{4})/) => [["123", "4567"]]
- 42. HTMLタグの中身 "<p>hoge</p><p>piyo</p>".scan(/<p>(.+?)</p>/) =>[["hoge"], ["piyo"]]
- 43. HTTP URI "http://hoge.com/piyo"=~ %r{https?:(//(([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=])*@)?([(([0-9a-f]{1,4}:){6}([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0- 4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|::([0-9a-f]{1,4}:){5}([0-9a-f]{1,4}:[0- 9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|([0- 9a-f]{1,4})?::([0-9a-f]{1,4}:){4}([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0- 4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|(([0-9a-f]{1,4}:)?[0-9a-f]{1,4})?::([0-9a-f]{1,4}:){3}([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0- 4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|(([0-9a-f]{1,4}:){0,2}[0-9a-f]{ 1,4})?::([0-9a-f]{1,4}:){2}([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0- 5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|(([0-9a-f]{1,4}:){0,3}[0-9a-f]{1,4})?::[0-9a-f]{1,4}:([0-9a-f]{1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0- 5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]))|(([0-9a-f]{1,4}:){0,4}[0-9a-f]{1,4})?::([0-9a-f]{ 1,4}:[0-9a-f]{1,4}|(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0- 4]d|25[0-5]))|(([0-9a-f]{1,4}:){0,5}[0-9a-f]{1,4})?::[0-9a-f]{1,4}|(([0-9a-f]{1,4}:){0,6}[0-9a-f]{1,4})?::|v[0-9a-f]+.[!$&-.0-;=_a-z~]+)]|(d|[1-9]d|1d{2}|2[0- 4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5]).(d|[1-9]d|1d{2}|2[0-4]d|25[0-5])|([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&- ,;=])*)(:d*)?(/([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=@])*)*|/(([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=@])+(/([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&- ,:;=@])*)*)?|([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=@])+(/([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,:;=@])*)*)?(?([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&- ,/:;=?@])*)?(#([-.0-9_a-z~]|%[0-9a-f][0-9a-f]|[!$&-,/:;=?@])*)?}
- 44. ＿＿＿_ ／ ＼ ／:::::::─三三─＼ ／::::::::: （ ○）三（○）＼ | ､" ﾞ)（__人__）ﾙﾟ｡ﾟ_＿＿＿＿＿＿＿＿＿_ ＼ ゝ'ﾟ≦ 三ﾟ| | | ＿＿／ ｡≧ 三＝ | | | | | / , -ｧ, ≧= .| | | | | / / .ｲﾚ,､＞ | | | | | | ⌒ ーnｎｎ ,≦｀Vヾヾ≧ |_|_＿＿＿＿_＿＿＿＿_| ￣＼＿_､("二）｡ﾟ/｡･ｲﾊ､＼､ｌ二二ｌ二二＿|_|＿_|＿
- 45. HTTP URI "http://hoge.com/"=~ %r{(?:http|https)://[^s<u00A0"]+}ix => 0
- 46.
- 47.
- 48. for (1..100) { s/(?<=[05])$/Buzz/; s/^([0369]|[147]([0369]|[147][0369]*[258])* ([258]|[147][0369]*[147])| [258]([0369]|[258][0369]*[147])* ([147]|[258][0369]*[258]))+Buzz$/FizzBuzz/; s/^([0369]|[147]([0369]|[147][0369]*[258])* ([258]|[147][0369]*[147])| [258]([0369]|[258][0369]*[147])* ([147]|[258][0369]*[258]))+$/Fizz/; s/d+(?=D)//; print "$_n"; }
- 49. for (1..100) { s/(?<=[05])$/Buzz/; s/^([0369]|[147]([0369]|[147][0369]*[258])* ([258]|[147][0369]*[147])| [258]([0369]|[258][0369]*[147])* ([147]|[258][0369]*[258]))+Buzz$/FizzBuzz/; s/^([0369]|[147]([0369]|[147][0369]*[258])* ([258]|[147][0369]*[147])| [258]([0369]|[258][0369]*[147])* ([147]|[258][0369]*[258]))+$/Fizz/; s/d+(?=D)//; print "$_n"; } 5の倍数の時、Buzzを追加 Buzzがあって、 かつ3の倍数の時残ったFizzBuzz 3の倍数をFizzに 最後に必要ない数値を削除
- 50.
- 51. 正規表現は強力 なので、複雑なケースを避ける （バリデーションで頑張り過ぎない） sedやgrepなどプログラミング以外で 活用したほうが良い。
- 52.