Regular Expressions 101

Explanation

Pro

beginthe literal text begin (case insensitive)

Non-Capturing Group(?:(?!begin).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!begin)

beginthe literal text begin (case insensitive)

.any character

TOKEN_456the literal text TOKEN_456 (case insensitive)

.*?any character, repeated any number of times

endthe literal text end (case insensitive)

Global pattern flags

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

g modifier: global. Finds all matches instead of stopping after the first

s modifier: single line. Allows a dot to match line terminators

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

begin(?:(?!begin).)*TOKEN_456.*?end

New

someText

begin
  .someMethod()
  .doSomething(TOKEN_123)
  .someMethod()
end

begin
  .someMethod()
  .doSomething(TOKEN_456)
  .someMethod()
end

begin
  .someMethod()
  .doSomething(TOKEN_789)
  .someMethod()
end

more Text

Extraction

someText

begin
  .someMethod()
  .doSomething(TOKEN_123)
  .someMethod()
end

begin
  .someMethod()
  .doSomething(TOKEN_456)
  .someMethod()
end

begin
  .someMethod()
  .doSomething(TOKEN_789)
  .someMethod()
end

more Text