Last data update: 2014.03.03
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R: Wildcards
Wildcards
Description
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.
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type |
the type of match to perform.
There are three match types
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greedy : match the longest string. This is the default matching type.
-
lazy : match the shortest string. This matches the shortest string from the same anchor point, not necessarily the shortest global string.
-
possessive : match and don't allow backtracking
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Functions
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zero_or_more : match ... zero or more times.
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one_or_more : match ... one or more times.
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maybe : match ... zero or one times.
See Also
Other rex: %or% , capture ,
character_class , counts ,
group , lookarounds ,
not , rex ,
shortcuts
Results
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