Regular Expressions 101

Group 1([\r\n](?=\d{4}-\d{2}-\d{2}T)|(?<=ContentGenerator) )

1st Alternative[\r\n](?=\d{4}-\d{2}-\d{2}T)

Character Class[\r\n]

\ra carriage return (ASCII 13)

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

Positive Lookahead(?=\d{4}-\d{2}-\d{2}T)

\d{4}a digit, repeated exactly 4 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

2nd Alternative(?<=ContentGenerator)

Positive Lookbehind(?<=ContentGenerator)

ContentGeneratorthe literal text ContentGenerator (case sensitive)

the literal (32₁₀ / 40₈ / 20₁₆)

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

([\r\n](?=\d{4}-\d{2}-\d{2}T)|(?<=ContentGenerator) )

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