constraints.checkPattern {tableschema.r} | 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')
[Package tableschema.r version 1.1.2 Index]