Regular Expressions 101

^start of line

Positive Lookahead(?=.*\D{2,})

.*any character (except for line terminators), repeated any number of times

\D{2,}any character that's not a digit, repeated at least 2 times

Character Class[-.^\d]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

\da digit

$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

^(?=.*\D{2,})[-.^\d]+$

New

-1.2^-2.4
-12^2.4
-1^2

but not

1^2
1+2