Regular Expressions 101

Pro

^start of line

\s*any whitespace character, repeated any number of times

Character Class[+-]?

?matches at most one character from the set below:

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d*a digit, repeated any number of times

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)*

*repeats the group contents below any number of times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Non-Capturing Group(?:\s*,\s*[+-]?\d*\.?\d+(?:\.\d+)*){9,}

{9,}repeats the group contents below at least 9 times:

\s*any whitespace character, repeated any number of times

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*any whitespace character, repeated any number of times

Character Class[+-]?

?matches at most one character from the set below:

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d*a digit, repeated any number of times

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)*

*repeats the group contents below any number of times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\s*any whitespace character, repeated any number of times

$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.

25 tokens

^\s*[+-]?\d*\.?\d+(?:\.\d+)*(?:\s*,\s*[+-]?\d*\.?\d+(?:\.\d+)*){9,}\s*$

New

2,2.5,.5, .678 ,39,1.4.4.8,2.4,2.5,2.6,2.7
1,2,3,4,5,6,7,  8  ,  9,0
.1,.2,.3.33.33,.4.5.4,8,9,8,7,.0,0

2,2.5,.5, .678 ,39,1.4.4.8,2.4,2.5,2.6,2.7
1,2,3,4,5,6,7,  8  ,  9,0
.1,.2,.3.33.33,.4.5.4,8,9,8,7,.0,0