QRegularExpressionMatch对象还包含模式字符串中捕获组捕获的子字符串的信息。captured()函数将返回第n个捕获组捕获的字符串: QRegularExpressionre("^(\\d\\d)/(\\d\\d)/(\\d\\d\\d\\d)$");QRegularExpressionMatchmatch=re.match("08/12/1985");if(match.hasMatch()) {QStringday=match.captured(...
A regular expression is a sequence of characters that defines a certain pattern. You normally use a regular expression to search text for a group of words that matches the pattern, for example, while parsing program input or while processing a block of text. The character vector'Joh?n\w*'i...
Normally, when one searches for a sub-string in a string, there has to be an exact match. Hence, if one searches for a sub-string "abc" then the string being searched for has to contain these exact letters in the same exact sequence for a match to be found. One can extend the sea...
QRegularExpressionMatch match = re.match("12 abc 45 def", 1); if (match.hasMatch()) { QString matched match.captured(0); // matched == "45 def" // ... } 1. 2. 3. 4. 5. 6. 提取已捕获的子字符串 QRegularExpressionMatch对象还包含有关模式字符串中捕获组捕获的子字符串的信息。...
Exact String Matching If you need exact matches you will need another type of modifier. Let’s see an example so you can see what I’m talking about: # We want to find if this string is exactly four letters long, this will # still match because it has more than four, but it's no...
QRegularExpressionValidator automatically wraps the regular expression in the \\A and \\z anchors; in other words, it always attempts to do an exact match. Example of use: // regexp: optional '-' followed by between 1 and 3 digits QRegularExpression rx("-?\\d{1,3}"); QValidator *...
In it's simplest form, a regular expression is a string of symbols to match "as is". That's not very impressive yet. But you can see that regexes match the first case found, once, anywhere in the input string. Quantifiers So what if you want to match sevearal characters? You need ...
exact 55. fantastic 56. ancient 57. expression 58. attracts 59. original 60. amazed 答案解析: 51. brilliant:她拥有一个杰出的头脑,总是能找到问题的解决方案。 52. stretches:这条路延伸到远方。 53. regular:规律的饮食对健康有益。 54. exact:计算机可以给出精确的答案。 55. fantastic:有太多精彩...
String Literals The most basic form of pattern matching is the match of a string literal. For example, if the regular expression is EMP and the input string is EMP, the match succeeds because the strings are identical. This regular expression also matches any string containing EMP, such as ...
When starting to use the Connector please insert the Subscription key from the previous step. The RegexFlow connector has two parameters:"regular expression pattern" - the regex pattern "body" - text on which the regex pattern will be executed...