is_isbn: Check if an argument is an ISBN string
In checkstring: Common String Format Validation
is_isbn R Documentation
Check if an argument is an ISBN string
Description
Validates ISBN-10 and ISBN-13 formats, including check digit verification.
Hyphens and spaces are allowed as separators.
Usage
is_isbn(x)
Arguments
x
(any)
Object to check.
Value
TRUE if x is a valid ISBN string, FALSE otherwise.
References
https://en.wikipedia.org/wiki/International_Standard_Book_Number
Examples
is_isbn("978-0-306-40615-7")
checkstring documentation built on Sept. 28, 2026, 5:07 p.m.
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| is_isbn | R Documentation |
Check if an argument is an ISBN string
Description
Validates ISBN-10 and ISBN-13 formats, including check digit verification. Hyphens and spaces are allowed as separators.
Usage
is_isbn(x)
Arguments
x |
( |
Value
TRUE if x is a valid ISBN string, FALSE otherwise.
References
https://en.wikipedia.org/wiki/International_Standard_Book_Number
Examples
is_isbn("978-0-306-40615-7")
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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