Regular Expressions 101

^start of line

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

:Ythe literal text :Y (case sensitive)

Group 1(,[A-Z]:Y)*

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

:Ythe literal text :Y (case sensitive)

$end of line

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^[A-Z]:Y(,[A-Z]:Y)*$

New

S:Y,P:Y,T:Y,A:Y
S:Y,P:Y,T:Y,A:Y,C:Y
S:Y,P:Y,T:Y,A:Y,C:Y,D:Y
A:Y
B:Y
D:Y,F:Y

All the following should never match. Cos 1 or more of them has :N.

S:Y,P:N,T:Y,A:Y
S:Y,P:Y,T:Y,A:Y,C:N
S:Y,P:Y,T:N,A:Y,C:N,D:Y
A:N
B:N
D:Y,F:N

Regular Expression

Extraction