Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression

/
/
gm

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?m)^\s*?((?:virtual\s*|const\s*|friend\s*){0,3})\s*([\w]*?)\s*\w+\s*::\s*([\w]+)\s*(\(.*\))\s*(const)?\s*[{|:]" Local $sString = "#include <iostream>" & @CRLF & _ "#include <iomanip>" & @CRLF & _ "#include "Time.h"" & @CRLF & _ "using namespace std;" & @CRLF & _ "" & @CRLF & _ "Time :: Time(const int h, const int m, const int s) " & @CRLF & _ " : hour(h), minute (m), second(s)" & @CRLF & _ "{}" & @CRLF & _ "" & @CRLF & _ "virtual const void Time :: setTime(const int h, const int m, const int s) " & @CRLF & _ "{" & @CRLF & _ " hour = h;" & @CRLF & _ " minute = m;" & @CRLF & _ " second = s; " & @CRLF & _ "} " & @CRLF & _ " " & @CRLF & _ "std::string Time :: print() const" & @CRLF & _ "{" & @CRLF & _ " cout << setw(2) << setfill('0') << hour << ":"" & @CRLF & _ " << setw(2) << setfill('0') << minute << ":"" & @CRLF & _ " << setw(2) << setfill('0') << second << "\n"; " & @CRLF & _ " " & @CRLF & _ "}" & @CRLF & _ " " & @CRLF & _ "bool Time :: equals(const Time &otherTime)" & @CRLF & _ "{" & @CRLF & _ " if(hour == otherTime.hour " & @CRLF & _ " && minute == otherTime.minute " & @CRLF & _ " && second == otherTime.second)" & @CRLF & _ " return true;" & @CRLF & _ " else" & @CRLF & _ " return false;" & @CRLF & _ "}" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($aArray, "Result")

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm