Wildcards

Wildcards

Usage

zero_or_more(..., type = c("greedy", "lazy", "possessive"))

one_or_more(..., type = c("greedy", "lazy", "possessive"))

maybe(..., type = c("greedy", "lazy", "possessive"))

Arguments

...

shortcuts, R variables, text, or other rex functions.

type

the type of match to perform.

There are three match types

1. greedy: match the longest string. This is the default matching type.

2. lazy: match the shortest string. This matches the shortest string from the same anchor point, not necessarily the shortest global string.

3. possessive: match and don't allow backtracking

Functions

• zero_or_more: match ... zero or more times.

• one_or_more: match ... one or more times.

• maybe: match ... zero or one times.

See also

Other rex: %or%(), capture(), character_class(), counts, group(), lookarounds, not(), rex(), shortcuts