ISBN v0.1.0 ISBN View Source

Documentation for ISBN.

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Functions

format(isbn)

Returns ISBN formatted.

valid?(isbn)

Checks if ISBN is valid.

Link to this section Functions

Link to this function

format(isbn)

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Returns ISBN formatted.

Examples

iex> ISBN.format("9992158107")
"99-9215-810-7"

iex> ISBN.format("9992158106")
nil

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valid?(isbn)

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Checks if ISBN is valid.

Examples

iex> ISBN.valid?("9971502100")
true