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

/
/
g

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 = "\/\\*[^*]*\\*+(?:[^\/*][^*]*\\*+)*\/|\/\/.*" Local $sString = "import android.content.res.Resources;" & @CRLF & _ " import android.os.Handler;" & @CRLF & _ " import android.preference.PreferenceFragment;" & @CRLF & _ " import android.view.ViewGroup;" & @CRLF & _ " * Provides the regex to identify domain HTTP(S) protocol and/or 'www' sub-domain." & @CRLF & _ " *" & @CRLF & _ " * Used to format user-facing {@link String}'s in certain preferences." & @CRLF & _ " */" & @CRLF & _ " public static final String ADDRESS_FORMAT_REGEX = "^(https?://(w{3})?|www\\.)";" & @CRLF & _ "" & @CRLF & _ " /**" & @CRLF & _ " // Used to ensure that settings are only fetched once throughout the lifecycle of the fragment" & @CRLF & _ " private boolean mShouldFetch;" & @CRLF & _ "" & @CRLF & _ " public View onCreateView(@NonNull LayoutInflater inflater," & @CRLF & _ " ViewGroup container," & @CRLF & _ " Bundle savedInstanceState) {" & @CRLF & _ " // use a wrapper to apply the Calypso theme" & @CRLF & _ " Context themer = new ContextThemeWrapper(getActivity(), R.style.Calypso_SiteSettingsTheme);" & @CRLF & _ " LayoutInflater localInflater = inflater.cloneInContext(themer);" & @CRLF & _ " View view = super.onCreateView(localInflater, container, savedInstanceState);" & @CRLF & _ "" & @CRLF & _ " if (view != null) {" & @CRLF & _ " setupPreferenceList((ListView) view.findViewById(android.R.id.list), getResources());" & @CRLF & _ " }" & @CRLF & _ "" & @CRLF & _ " return view;" & @CRLF & _ " }" & @CRLF & _ "" & @CRLF & _ " @Override" & @CRLF & _ " public void onChildViewAdded(View parent, View child) {" & @CRLF & _ " if (child.getId() == android.R.id.title && child instanceof TextView) {" & @CRLF & _ " // style preference category title views" & @CRLF & _ " TextView title = (TextView) child;" & @CRLF & _ " WPPrefUtils.layoutAsBody2(title);" & @CRLF & _ " } else {" & @CRLF & _ " // style preference title views" & @CRLF & _ " TextView title = (TextView) child.findViewById(android.R.id.title);" & @CRLF & _ " if (title != null) WPPrefUtils.layoutAsSubhead(title);" & @CRLF & _ " }" & @CRLF & _ " }" & @CRLF & _ "" & @CRLF & _ " @Override" & @CRLF & _ " public void onChildViewRemoved(View parent, View child) {" & @CRLF & _ " // NOP" & @CRLF & _ " }" & @CRLF & _ "" & @CRLF & _ " @Override" 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