constraints.checkPattern: Pattern matching
In frictionlessdata/tableschema-r: Table Schema 'Frictionless Data'
View source: R/constraints.checkPattern.R
constraints.checkPattern R Documentation
Pattern matching
Description
Search for pattern matches (value) within a character vector (constraint).
A regular expression is used to test field values.
If the regular expression matches then the value is valid.
The values of this field MUST conform to the standard
XML Schema regular expression syntax.
Usage
constraints.checkPattern(constraint, value)
Arguments
constraint
character vector where matches are sought
value
character string to be matched
Value
TRUE if the pattern constraint is met
See Also
Examples
constraints.checkPattern(constraint = '^test$', value = 'test')
constraints.checkPattern(constraint = '^test$', value = 'TEST')
frictionlessdata/tableschema-r documentation built on Oct. 1, 2022, 11:44 a.m.
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View source: R/constraints.checkPattern.R
| constraints.checkPattern | R Documentation |
Pattern matching
Description
Search for pattern matches (value) within a character vector (constraint).
A regular expression is used to test field values.
If the regular expression matches then the value is valid.
The values of this field MUST conform to the standard
XML Schema regular expression syntax.
Usage
constraints.checkPattern(constraint, value)
Arguments
constraint |
character vector where matches are sought |
value |
character string to be matched |
Value
TRUE if the pattern constraint is met
See Also
Examples
constraints.checkPattern(constraint = '^test$', value = 'test') constraints.checkPattern(constraint = '^test$', value = 'TEST')
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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