Regular Expressions 101

^start of line

Group date(?<date>\d{2}/\d{2})

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

/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

Non-Capturing Group(?:\s+(?<description>.*?))??

??repeats the group contents below at most once:

\s+any whitespace character, repeated at least once

Group description(?<description>.*?)

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

Non-Capturing Group(?: \s+ (?:(?<value_sign>[-+])\s)? (?<value>\d{1,3}(?:\.\d{3})*(?:,\d+)?) )

\s+any whitespace character, repeated at least once

Non-Capturing Group(?:(?<value_sign>[-+])\s)?

?repeats the group contents below at most once:

Group value_sign(?<value_sign>[-+])

Character Class[-+]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\sany whitespace character

Group value(?<value>\d{1,3}(?:\.\d{3})*(?:,\d+)?)

\d{1,3}a digit, repeated between 1 and 3 times

Non-Capturing Group(?:\.\d{3})*

*repeats the group contents below any number of times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{3}a digit, repeated exactly 3 times

Non-Capturing Group(?:,\d+)?

?repeats the group contents below at most once:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d+a digit, repeated at least once

\na line-feed (newline) character (ASCII 10)

Group categories(?<categories>.*)

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

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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

No unit tests · Add a test to get started

Search reference

Regular Expression

^
(?<date>\d{2}/\d{2})
(?:\s+(?<description>.*?))??
(?:
  \s+
  (?:(?<value_sign>[-+])\s)?
  (?<value>\d{1,3}(?:\.\d{3})*(?:,\d+)?)
)
\n
(?<categories>.*)

Unit Tests

There are no unit tests, click to add some.