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

r"
"
gm

Test String

Code Generator

Language

Generated Code

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(?m)(?P<street>\d+\s.*?(?:,\s*\w*\s*\d+)*),\s*(?P<city>.*?),\s*(?P<state>[A-Za-z]+)\s*(?P<zip>\d+)?,*`) var str = `9320 Se Woodstock Blvd, Portland, OR 97266 921 S E Powell Blvd, PORTLAND, OR 97202 6560 Sw Beaverton, Raleigh Hills, OR 97225 2875 Se Powell Blvd, Portland, Or 97202, Usa 1311 Nw 23rd Ave, Portland, OR 97210 7710 Sw Barbur Blvd, Portland, OR 97219 1462 Ne 122nd Ave., Portland, OR 97230 1831 W Burnside, PORTLAND, OR 97209 1881 Sw 5th Ave, Portland, OR 97201 3610 Se Hawthorne Blvd, Portland, OR 97214 1850 Sw Skyline Blvd., Portland, OR 97221 9 Centerpointe Dr, Lake Oswego, OR 97035 7700 Southwest Dartmouth Avenue, 120, Tigard, OR 97223 4811 Meadows Road , Suite 111, Lake Oswego, OR 97035` 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/