Regular Expressions 101

Pro

Group 1(\d{4}-\d{2}-\d{2})

\d{4}a Unicode decimal digit, repeated exactly 4 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

Group 2(.*?)

.*?any Unicode character, repeated any number of times

Positive Lookahead(?=\d{4}-\d{2}-\d{2}|$)

1st Alternative\d{4}-\d{2}-\d{2}

\d{4}a Unicode decimal digit, repeated exactly 4 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

2nd Alternative$

$end of string, or before its final line terminator

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

25 tokens

(\d{4}-\d{2}-\d{2})(.*?)(?=\d{4}-\d{2}-\d{2}|$)

New

2018-01-01

Stuff.

More Stuff.

2018-01-02

Different stuff.