counts | R Documentation |
Functions to restrict a regex to a specific number
n_times(x, n, type = c("greedy", "lazy", "possessive"))
between(x, low, high, type = c("greedy", "lazy", "possessive"))
at_least(x, n, type = c("greedy", "lazy", "possessive"))
at_most(x, n, type = c("greedy", "lazy", "possessive"))
x |
A regex pattern. |
n |
An integer number |
type |
the type of match to perform. There are three match types
|
low |
An integer number for the lower limit. |
high |
An integer number for the upper limit. |
n_times
: x
must occur exactly n
times.
between
: x
must occur between low
and high
times.
at_least
: x
must occur at least n
times.
at_most
: x
must occur at most n
times.
Other rex:
%or%()
,
capture()
,
character_class()
,
group()
,
lookarounds
,
not()
,
rex()
,
shortcuts
,
wildcards
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