exercism/elixir/file-sniffer/HINTS.md

Hints

General

• Remember to reference the table in the instructions.

1. Given an extension, return the expected media type

• Use pattern matching to return the correct media type.
• You can use multiple function clauses.

2. Given a binary file, return the expected media type

• Use the binary special form available to you for writing a binary literal.
• Use pattern matching to match against the first few bytes of the file binary.

3. Given an extension and a binary file, verify that the file matches the expected type

• Reuse the functions you created for parts 1 and 2.
• Compare the return value of each function, then return the appropriate value.
  • You can use the if macro conditional for binary conditions.