{"id":223,"date":"2010-09-30T11:51:38","date_gmt":"2010-09-30T11:51:38","guid":{"rendered":"http:\/\/enjoyasp.net\/?p=223"},"modified":"2010-09-30T11:51:38","modified_gmt":"2010-09-30T11:51:38","slug":"%e6%ad%a3%e5%88%99%e8%a1%a8%e8%be%be%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/enjoyasp.net\/index.php\/2010\/09\/30\/%e6%ad%a3%e5%88%99%e8%a1%a8%e8%be%be%e5%bc%8f\/","title":{"rendered":"\u6b63\u5219\u8868\u8fbe\u5f0f"},"content":{"rendered":"

1\uff0c\u8d44\u6599<\/p>\n

2\uff0c\u7279\u6b8a\u5b57\u6bcd
\n \uff081\uff09
\n. \u5339\u914d\u9664\u4e86\u6362\u884c\u7b26\uff08\\n\uff09\u4ee5\u5916\u7684\u4efb\u610f\u4e00\u4e2a\u5b57\u7b26\u3002\u8981\u5339\u914d\u5c0f\u6570\u70b9\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\.”<\/p>\n

^ \u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\u4f4d\u7f6e\u3002\u8981\u5339\u914d “^” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\^”<\/p>\n

$ \u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u7ed3\u5c3e\u4f4d\u7f6e\u3002\u8981\u5339\u914d “$” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\$”<\/p>\n

( ) \u6807\u8bb0\u4e00\u4e2a\u5b50\u8868\u8fbe\u5f0f\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u4f4d\u7f6e\u3002\u8981\u5339\u914d\u5c0f\u62ec\u53f7\uff0c\u8bf7\u4f7f\u7528 “\\(” \u548c “\\)”<\/p>\n

[ ] \u7528\u6765\u81ea\u5b9a\u4e49\u80fd\u591f\u5339\u914d ‘\u591a\u79cd\u5b57\u7b26’ \u7684\u8868\u8fbe\u5f0f\u3002\u8981\u5339\u914d\u4e2d\u62ec\u53f7\uff0c\u8bf7\u4f7f\u7528 “\\[” \u548c “\\]”<\/p>\n

{ } \u4fee\u9970\u5339\u914d\u6b21\u6570\u7684\u7b26\u53f7\u3002\u8981\u5339\u914d\u5927\u62ec\u53f7\uff0c\u8bf7\u4f7f\u7528 “\\{” \u548c “\\}”<\/p>\n

? \u4fee\u9970\u5339\u914d\u6b21\u6570\u4e3a 0 \u6b21\u6216 1 \u6b21\u3002\u8981\u5339\u914d “?” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\?”<\/p>\n

+ \u4fee\u9970\u5339\u914d\u6b21\u6570\u4e3a\u81f3\u5c11 1 \u6b21\u3002\u8981\u5339\u914d “+” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\+”<\/p>\n

* \u4fee\u9970\u5339\u914d\u6b21\u6570\u4e3a 0 \u6b21\u6216\u4efb\u610f\u6b21\u3002\u8981\u5339\u914d “*” \u5b57\u7b26\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\*”<\/p>\n

| \u5de6\u53f3\u4e24\u8fb9\u8868\u8fbe\u5f0f\u4e4b\u95f4 “\u6216” \u5173\u7cfb\u3002\u5339\u914d “|” \u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 “\\|”<\/p>\n

\uff082\uff09\u201c\\\u201d
\n\\w \u53ef\u4ee5\u5339\u914d\u4efb\u4f55\u4e00\u4e2a\u5b57\u6bcd\u6216\u8005\u6570\u5b57\u6216\u8005\u4e0b\u5212\u7ebf<\/p>\n

\\W W\u5927\u5199\uff0c\u53ef\u4ee5\u5339\u914d\u4efb\u4f55\u4e00\u4e2a\u5b57\u6bcd\u6216\u8005\u6570\u5b57\u6216\u8005\u4e0b\u5212\u7ebf\u4ee5\u5916\u7684\u5b57\u7b26<\/p>\n

\\s \u53ef\u4ee5\u5339\u914d\u7a7a\u683c\u3001\u5236\u8868\u7b26\u3001\u6362\u9875\u7b26\u7b49\u7a7a\u767d\u5b57\u7b26\u7684\u5176\u4e2d\u4efb\u610f\u4e00\u4e2a<\/p>\n

\\S S\u5927\u5199\uff0c\u53ef\u4ee5\u5339\u914d\u4efb\u4f55\u4e00\u4e2a\u7a7a\u767d\u5b57\u7b26\u4ee5\u5916\u7684\u5b57\u7b26<\/p>\n

\\d \u53ef\u4ee5\u5339\u914d\u4efb\u4f55\u4e00\u4e2a 0~9 \u6570\u5b57\u5b57\u7b26<\/p>\n

\\D D\u5927\u5199\uff0c\u53ef\u4ee5\u5339\u914d\u4efb\u4f55\u4e00\u4e2a\u975e\u6570\u5b57\u5b57\u7b26<\/p>\n

(3) {}
\n{n} \u8868\u8fbe\u5f0f\u56fa\u5b9a\u91cd\u590dn\u6b21\uff0c\u6bd4\u5982\uff1a”\\w{2}” \u76f8\u5f53\u4e8e “\\w\\w”<\/p>\n

{m, n} \u8868\u8fbe\u5f0f\u5c3d\u53ef\u80fd\u91cd\u590dn\u6b21\uff0c\u81f3\u5c11\u91cd\u590dm\u6b21\uff1a”ba{1,3}”\u53ef\u4ee5\u5339\u914d “ba”\u6216”baa”\u6216”baaa”<\/p>\n

{m, } \u8868\u8fbe\u5f0f\u5c3d\u53ef\u80fd\u7684\u591a\u5339\u914d\uff0c\u81f3\u5c11\u91cd\u590dm\u6b21\uff1a”\\w\\d{2,}”\u53ef\u4ee5\u5339\u914d “a12”,”x456″…<\/p>\n","protected":false},"excerpt":{"rendered":"

1\uff0c\u8d44\u6599 2\uff0c\u7279\u6b8a\u5b57\u6bcd \uff081\uff09 . \u5339\u914d\u9664\u4e86\u6362\u884c\u7b26\uff08\\n\uff09\u4ee5\u5916\u7684\u4efb\u610f\u4e00\u4e2a\u5b57\u7b26\u3002\u8981\u5339\u914d\u5c0f\u6570\u70b9\u672c\u8eab\uff0c\u8bf7\u4f7f\u7528 &#8 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-223","post","type-post","status-publish","format-standard","hentry","category-csharp"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/223","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/comments?post=223"}],"version-history":[{"count":0,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/223\/revisions"}],"wp:attachment":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/media?parent=223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/categories?post=223"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/tags?post=223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}