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Is it an ISBN (10 or 13)?

Source: R/dt-research-id.R
is_isbn.Rd

Is it an ISBN (10 or 13)?

Usage

is_isbn(x)

Arguments

x

A character vector.

Value

Logical vector; TRUE for a valid ISBN-10 or ISBN-13 (dashes/spaces ignored) whose check digit is correct.

See also

Other research-id detectors: is_doi(), is_issn(), is_npi(), is_orcid()

Examples

is_isbn(c("140955525-9", "978-3-16-148410-0", "140955525-8", NA))
#> [1]  TRUE  TRUE FALSE    NA