Regular Expressions 101

Pro

Group bank_code(?<bank_code>[a-z|A-Z]{4})

Character Class[a-z|A-Z]{4}

{4}matches exactly 4 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

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

Group code_pays(?<code_pays>[a-z|A-Z]{4})

Character Class[a-z|A-Z]{4}

{4}matches exactly 4 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

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

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

Group 3(\d{3})?

?repeats the group contents below at most once:

\d{3}a digit, repeated exactly 3 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

No unit tests · Add a test to get started

25 tokens

(?<bank_code>[a-z|A-Z]{4})(?<code_pays>[a-z|A-Z]{4})\d{2}(\d{3})?

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