Quantifiers

.optional

Matches 0 or 1 of the proceeding expression.

Example

ExpressiveRegex()\
.optional.digit\
.toRegexString()

"\d?"

.zeroOrMore

Matches 0 or more repetitions of the proceeding expression.

Example

ExpressiveRegex()\
.zeroOrMore.digit\
.toRegexString()

"\d*"

.zeroOrMoreLazy

Matches 0 or more repetitions of the proceeding expression, but as few times as possible.

Example

ExpressiveRegex()\
.zeroOrMoreLazy.digit\
.toRegexString()

"\d*"

.oneOrMore

Matches 1 or more repetitions of the proceeding expression.

Example

ExpressiveRegex()\
.oneOrMore.digit\
.toRegexString()

"\d+"

.oneOrMoreLazy

Matches 1 or more repetitions of the proceeding expression, but as few times as possible.

Example

ExpressiveRegex()\
.oneOrMoreLazy.digit\
.toRegexString()

"\d+?"

.exactly(n)

Matches exactly n repetitions of the proceeding expression.

Example

ExpressiveRegex()\
.exactly(4).digit\
.toRegexString()

"\d{4}"

.atLeast(n)

Matches at least n repetitions of the proceeding expression. If n is 1 then is equivalente to .oneOrMore . If n is 0 then is equivalente to .zeroOrMore .

Example

ExpressiveRegex()\
.atLeast(4).digit\
.toRegexString()

"\d{4,}"

.uoTo(n)

Matches up to n repetitions of the proceeding expression. If n is 1 then is equivalente to .optional .

Example

ExpressiveRegex()\
.uoTo(4).digit\
.toRegexString()

"\d{,4}"

.between(n,m)

Matches between n and m repetitions of the proceeding expression. If n is 0 and m is 1 then is equivalente to .optional . If n is 0 and m > 1 then is equivalente to .uoTo(m) .

Example

ExpressiveRegex()\
.between(2,4).digit\
.toRegexString()

"\d{2,4}"

.betweenLazy(n,m)

Matches between n and m repetitions of the proceeding expression, but as few times as possible.

Example

ExpressiveRegex()\
.between(2,4).digit\
.toRegexString()

"\d{2,4}?"