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
Processing...

Test String

Code Generator

Language

Generated Code

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(?mi)^(?:[\d\sx]+)?(?:\[.*\]\s)?(?:(.*)(?:[\(\/].*)$|(.*)(?:foil)|(.*?)\d|(.*))`) var str = `4x Silhana Ledgewalker (Silhana Saltador de Peitoril) - NM 4x Kiln Fiend (Demônio Fornalha) - NM 4x Assault Strobe (Estroboscópio de Ataque) - NM 1x [Expedition] Wasteland Urborg, Tomb of Yawgmoth 4 Thoughtcast 1x [OGW] Kozilek, a Grande Distorção 1x [OGW] Retorno de Kozilek 1x [OGW] Retorno de Kozilek 1x [OGW] Linvala, a Preservadora Regal Force 2 Bloodstained Mire 4 Relic of Progenitus 1x Olho de Ugin / Eye of Ugin FOIL 1x Templo dos Eldrazi / Eldrazi Temple 1x [Expedition] Prairie Stream (Mint) 2x World Breaker / Rompe-mundos Mint 4x Holy Day (Dia Sagrado) - NM 1x TAmpo de adivinhação do sensei 1 x Gosmanuladora 1 x Gaddock Teeg 4x Força de Vontade 1x Fractius Pele Preciosa / Gemhide Sliver 1x Lupíneo Coração de Prata / Wolfir Silverheart 1 x Inquisição de Kozilek 4 de 4 1 x Gosmanuladora Tropical island 1x Ugin's Nexus foil 1x Visões do Soro FOIL \"FNM\" 1x Labirinto Nimboso / Nimbus Maze 1x Espadas em Arados / Swords to Plowshares 1x Regiões Agrestes de Adarkar / Adarkar Wastes 1x Costa do Mar de Cromo / Seachrome Coast 1x Presente do Molda-aço / Steelshaper\\\\ 1x Aprisionar / Remand 1x Imposto Territorial / Land Tax 1x Pasmar / Daze (JP) 1x Magiaprisionar / Trickbind 2x Comandante do Elmo de Coral / Coralhelm Commander 1x Caminho para o Exílio / Path to Exile 2x Thrun, the Last Troll/ Thrun, o Último Troll **NM** 1x Cone de Vapor / Vapor Snag 1x Cone de Vapor / Vapor Snag 1x Cone de Vapor / Vapor Snag 1x Cone de Vapor / Vapor Snag 1x Cone de Vapor / Vapor Snag` for i, match := range re.FindAllString(str, -1) { fmt.Println(match, "found at index", i) } }

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 Golang, please visit: https://golang.org/pkg/regexp/