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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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
No Match

/
/
i

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @/ ^[\s]*@wb_export[\s]+def ([\w]+)\(jsonstr\):[\s\S]*?""""({""in"":.*)""""([\s\S]*?)((@|$)[\s\S]*)$ /; string input = @"@wb_export def SimpleFunction(jsonstr): #global fd #os.write(fd, ""wb_pre\n"") # Definition of Input and Output Parameters (name and type) """"{""in"": {""param"":""string""}, ""out"": {""return"":""string""}}"""" # /!\ Do not edit here ! # Edit function SimpleFunctionImpl() in ""common"" part import json,os,sys,datetime inputData = json.loads(jsonstr) try: outputData = SimpleFunctionImpl(inputData[""param""]) fd = os.open(""../log/custom_success.log"", os.O_APPEND|os.O_CREAT|os.O_RDWR) os.write(fd, ""%s In : %s / Out : %s\n"" % (datetime.datetime.now().strftime(""[%Y-%m-%d %H:%M:%S.%f]""), jsonstr, json.dumps(outputData))) os.close(fd) return json.dumps(outputData) except Exception as e: fd = os.open(""../log/custom_error.log"", os.O_APPEND|os.O_CREAT|os.O_RDWR) os.write(fd, ""%s INTERNAL ERROR: Custom code uncatched exception in VCO::SimpleFunction().\n\tIn : %s\n\tMessage: %s\n"" % (datetime.datetime.now().strftime(""[%Y-%m-%d %H:%M:%S.%f]""), jsonstr, str(e))) os.close(fd) return json.dumps({""error"":""INTERNAL ERROR: Custom code uncatched exception in VCO::SimpleFunction.\n\tMessage: %s"" % str(e)}) except: fd = os.open(""../log/custom_error.log"", os.O_APPEND|os.O_CREAT|os.O_RDWR) os.write(fd, ""%s INTERNAL ERROR: Custom code uncatched system exception in VCO::SimpleFunction().\n"" % (datetime.datetime.now().strftime(""[%Y-%m-%d %H:%M:%S.%f]""))) os.close(fd) return json.dumps({""error"":""INTERNAL ERROR: Custom code uncatched system exception in VCO::SimpleFunction().""}) # End of SimpleFunction - VCO WB Custom Code Editor @wb_export def SimpleFunction2(jsonstr): #global fd #os.write(fd, ""wb_pre\n"") # Definition of Input and Output Parameters (name and type) """"{""in"": {""param"":""string""}, ""out"": {""return"":""string""}}"""" # /!\ Do not edit here ! # Edit function SimpleFunctionImpl() in ""common"" part return {""return"": ""OK2""} "; RegexOptions options = RegexOptions.IgnoreCase; Match m = Regex.Match(input, pattern, options); Console.WriteLine("'{0}' found at index {1}", m.Value, m.Index); } }

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 C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx