Regular Expressions 101

Explanation

Pro

(?i)applies the following effective flags to the remainder of the pattern: gi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Negative Lookbehind(?<![a-z])

Character Class[a-z]

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

athe literal a (97₁₀ / 141₈ / 61₁₆) (case insensitive)

Negative Lookahead(?![a-z])

Character Class[a-z]

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

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

25 tokens

(?i)(?<![a-z])a(?![a-z])

lag(a,1) + 252*a + max(3a*2) / 5*pctrange(a,10)

_

lag(a,1) + 252*a + max(3a*2) / 5*pctrange(a,10)