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 the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r#"(?m)=\s?.*(?:((?i)Fields\("(\w+)"\)\.Value\)*?))"#).unwrap(); let string = "Function lmpRoundedEndTime_ValueChanged(sender, e) If CDbl(Fields(\"lmpShiftID\").Value) <> 0 And IsNull(Fields(\"lmpRoundedStartTime\").Value) = False And IsNull(Fields(\"lmpRoundedEndTime\").Value) = False Then If CInt(App.Props(\"PN\").Fields(\"xapDCPayCalculationMethod\").Value) <> 2 Then Fields(\"lmpPayrollHours\").Value = App.Ax(\"TimecardFunctions\").CalculateHours(Fields(\"lmpShiftID\").Value,Fields(\"lmpRoundedStartTime\").Value,Fields(\"lmpRoundedEndTime\").Value) '''''''''''' ^ above should capture: lmpShiftID , lmpRoundedStartTime , lmpRoundedEndTime End If End If End Function Function TimecardLines_SetDefaultValues(sender, e) Dim oRs,dTimecardDate dTimecardDate = Null Set oRs = CreateObject(\"ADODB.Recordset\") oRs.Open \"select lmpEmployeeID,lmpShiftID,lmpTimecardDate,lmpProjectID from Timecards where lmpTimecardID = \" + App.Convert.NumberToSql(Fields(\"lmlTimecardID\").Value),Connection,adOpenStatic,adLockReadOnly,adCmdText If oRs.EOF = False Then Fields(\"lmlEmployeeID\").Value = oRs.Fields(\"lmpEmployeeID\").Value Fields(\"lmlShiftID\").Value = oRs.Fields(\"lmpShiftID\").Value Fields(\"lmlProjectID\").Value = oRs.Fields(\"lmpProjectID\").Value dTimecardDate = oRs.Fields(\"lmpTimecardDate\").Value End If oRs.Close oRs.Open \"select top 1 lmlRoundedEndTime From TimecardLines Where lmlTimecardID = \" + App.Convert.NumberToSql(Fields(\"lmlTimecardID\").Value) + \" Order By lmlRoundedEndTime Desc\",Connection,adOpenStatic,adLockReadOnly,adCmdText If oRs.EOF = False Then Fields(\"lmlRoundedStartTime\").Value = oRs.Fields(\"lmlRoundedEndTime\").Value Else Fields(\"lmlRoundedStartTime\").Value = App.Ax(\"Shift\").GetDayStartTime(Fields(\"lmlShiftID\").Value, dTimecardDate, e.SqlTransaction) ' Added to to fix -rounded end time is earlier than the rounded start time error when changing the labor hours 'Fields(\"lmlRoundedEndTime\").Value=Fields(\"lmlRoundedStartTime\").Value End If oRs.Close If Trim(Fields(\"lmlEmployeeID\").Value) <> \"\" Then oRs.Open \"select lmeDirectExpenseID,lmeIndirectExpenseID,lmeDefaultWorkCenterID from Employees where lmeEmployeeID = \" + App.Convert.StringToSql(Fields(\"lmlEmployeeID\").Value),Connection,adOpenStatic,adLockReadOnly,adCmdText If oRs.EOF = False Then If CInt(Fields(\"lmlTimecardType\").Value) = 1 Then If Trim(oRs.Fields(\"lmeDirectExpenseID\").Value) <> \"\" Then Fields(\"lmlExpenseID\").Value = oRs.Fields(\"lmeDirectExpenseID\").Value End If Else If Trim(oRs.Fields(\"lmeIndirectExpenseID\").Value) <> \"\" Then Fields(\"lmlExpenseID\").Value = oRs.Fields(\"lmeIndirectExpenseID\").Value End If End If If CInt(Fields(\"lmlTimecardType\").Value) = 2 Then If Trim(oRs.FIelds(\"lmeDefaultWorkCenterID\").Value) <> \"\" Then Fields(\"lmlWorkCenterID\").Value = oRs.FIelds(\"lmeDefaultWorkCenterID\").Value End If End If End If oRs.Close End If End Function"; // result will be an iterator over tuples containing the start and end indices for each match in the string let result = regex.captures_iter(string); for mat in result { println!("{:?}", mat); } }

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 Rust, please visit: https://docs.rs/regex/latest/regex/