Regular Expressions 101

Character Class[ \t]

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

Character Class[\d]{1,6}

{1,6}matches between 1 and 6 characters from the set below:

\da digit

Character Class[ \t]

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

\d{1,6}a digit, repeated between 1 and 6 times

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

-{1}the literal - (45₁₀ / 55₈ / 2D₁₆) , repeated exactly 1 time

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

\d{1,6}a digit, repeated between 1 and 6 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

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25 tokens

Regular Expression

[ \t][\d]{1,6}[ \t][ \t]*\d{1,6}[ \t]*-{1}[ \t]*\d{1,6}

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