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digitsPattern

Match digit characters

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Syntax

帕特= digitsPattern
帕特= digitsPattern(N)
帕特= digitsPattern(minCharacters,maxCharacters)

Description

example

pat= digitsPatterncreates a pattern that matches text composed of one or more digit characters.digitsPatternis Unicode tolerant.

example

pat= digitsPattern(N)matches text composed of exactlyNdigit characters.

example

pat= digitsPattern(minCharacters,maxCharacters)matches text composed of a quantity of digit characters greater than or equal tominCharactersand less than or equal tomaxCharacters.infis a valid value formaxCharacters.digitsPatternisgreedyand matches a quantity of digit characters as close tomaxCharacters越好。

Examples

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Open Live Script

Define a pattern expression,pat, for numeric digits usingdigitsPattern. Extract numeric digits from the string.

str ="MathWorks was founded in 1984. Patterns were 1st introduced in R2020b."; pat = digitsPattern; year = extract(str,pat)
year =3x1 string"1984" "1" "2020"
Open Live Script

Definepatas a pattern with 4 numeric digits. Usepatto extract the years from the string array.

dates = ["November 4th 2015""12/14/2019""Jan. 1 2020""28-Jan-2020 15:28:58"]; pat = digitsPattern(4); year_array = extract(dates,pat)
year_array =1x4 string"2015" "2019" "2020" "2020"
Open Live Script

Definepatas a pattern of numbers with between 3 and 4 digits. Usepatto extract the three parts of a U.S. phone number from a string array.

str ="My phone number is 1-(555)-123-4567"; pat = digitsPattern(3,4); phoneNum = extract(str,pat)
phoneNum =3x1 string"555" "123" "4567"

Input Arguments

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Number of characters to match, specified as a nonnegative integer scalar.

Data Types:single|double|int8|int16|int32|int64|uint8|uint16|uint32|uint64

Minimum number of characters to match, specified as a nonnegative integer scalar.

Data Types:single|double|int8|int16|int32|int64|uint8|uint16|uint32|uint64

Maximum number of characters to match, specified as a nonnegative integer scalar.

Data Types:single|double|int8|int16|int32|int64|uint8|uint16|uint32|uint64

Output Arguments

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Pattern expression, returned as apatternobject.

Version History

Introduced in R2020b

See Also

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