is_isin: Check if an argument is a valid ISIN string

View source: R/id.R

is_isinR Documentation

Check if an argument is a valid ISIN string

Description

Validates ISIN (International Securities Identification Number) format including Luhn check digit verification.

Usage

is_isin(x)

Arguments

x

(any)
Object to check.

Value

TRUE if x is a valid ISIN string, FALSE otherwise.

References

https://en.wikipedia.org/wiki/International_Securities_Identification_Number

Examples

is_isin("US0378331005")

checkstring documentation built on Sept. 28, 2026, 5:07 p.m.