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
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"^(<\!\-\- wp:onecms\/recipe-time \{\""type\""\:\""cook\"")\S(.*[a-z\:0-9\}\s])(\/\-\->)$"; string input = @"<!-- wp:onecms/recipe-header {""dek"":""\u003cp\u003eHungry for some \u003ca href=\u0022https://www.southernliving.com/recipes/old-fashioned-apple-pie\u0022\u003eapple pie\u003c/a\u003e? We are right there with you. Here's the recipe from the Whispering Canyon Café at Disney’s Wilderness Lodge—dessert will never be the same.\u003c/p\u003e""} /--> <!-- wp:onecms/primary-media /--> <!-- wp:onecms/recipe-media /--> <!-- wp:onecms/recipe-container --> <!-- wp:onecms/recipe-details --> <!-- wp:onecms/recipe-metadata {""yieldDescription"":""Makes one 9-inch pie.""} /--> <!-- wp:onecms/recipe-times --> <!-- wp:onecms/recipe-time {""type"":""hands-on"",""days"":0,""hours"":0,""minutes"":45} /--> <!-- wp:onecms/recipe-time {""type"":""cook"",""days"":0,""hours"":1,""minutes"":0} /--> <!-- /wp:onecms/recipe-times --> <!-- /wp:onecms/recipe-details --> <!-- wp:onecms/recipe-ingredients --> <!-- wp:onecms/recipe-section-header {""content"":""Pie Crust""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""butter, cut into small pieces"",""customMeasure"":""tablespoons"",""customQuantity"":""4""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""shortening"",""customMeasure"":""cup"",""customQuantity"":""0.25""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""all-purpose flour"",""customMeasure"":""cups"",""customQuantity"":""1.75""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""sugar"",""customMeasure"":""teaspoons"",""customQuantity"":""4""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""coarse salt"",""customMeasure"":""teaspoon"",""customQuantity"":""0.13""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""2% milk"",""customMeasure"":""cup"",""customQuantity"":""0.33""} /--> <!-- wp:onecms/recipe-section-header {""content"":""Apples""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""water"",""customMeasure"":""cup"",""customQuantity"":""1""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""Granny Smith apples, peeled and sliced"",""customQuantity"":""6""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""apple pie spice"",""customMeasure"":""teaspoon"",""customQuantity"":""2""} /--> <!-- wp:onecms/recipe-section-header {""content"":""Apple Pie Batter""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""butter, softened"",""customMeasure"":""cup"",""customQuantity"":""0.5""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""sugar"",""customMeasure"":""cup"",""customQuantity"":""0.67""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""eggs"",""customQuantity"":""2""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""flour"",""customMeasure"":""cups"",""customQuantity"":""1.5""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""baking powder"",""customMeasure"":""teaspoon"",""customQuantity"":""1.5""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""salt"",""customMeasure"":""teaspoon"",""customQuantity"":""0.13""} /--> <!-- wp:onecms/recipe-ingredient-custom {""customIngredient"":""heavy cream"",""customMeasure"":""cup"",""customQuantity"":""0.25""} /--> <!-- /wp:onecms/recipe-ingredients --> <!-- wp:onecms/recipe-nutrition {""displayNutritionRecipe"":false} /--> <!-- wp:onecms/recipe-directions --> <!-- wp:onecms/recipe-direction {""directionId"":""ddaa1eec-7bec-4284-b4e3-53b35cb83941"",""content"":""\u003cstrong\u003eFOR PIE CRUST: \u003c/strong\u003e""} /--> <!-- wp:onecms/recipe-direction {""directionId"":""e546e3c3-96a5-4be5-94fa-34ee625f3a48"",""content"":""\u003cstrong\u003eFOR APPLES:\u003c/strong\u003e""} /--> <!-- wp:onecms/recipe-direction {""directionId"":""49fbc0c6-12f0-420c-9dc6-19210620e023"",""content"":""\u003cstrong\u003eFOR APPLE PIE BATTER:\u003c/strong\u003e""} /--> <!-- wp:onecms/recipe-direction {""directionId"":""208717df-e3e3-43e9-a2bc-35ad854ae43c"",""content"":""\u003cstrong\u003eFOR APPLE PIE:\u003c/strong\u003e""} /--> <!-- /wp:onecms/recipe-directions --> <!-- wp:onecms/recipe-notes --> <!-- wp:onecms/recipe-note /--> <!-- /wp:onecms/recipe-notes --> <!-- /wp:onecms/recipe-container -->"; RegexOptions options = RegexOptions.Multiline; foreach (Match m in Regex.Matches(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