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Fix misleading type_from_binary instructions in file-sniffer #1638

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angelikatyborska merged 1 commit into from
Jun 17, 2026
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Fix misleading type_from_binary instructions in file-sniffer #1638

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2 changes: 1 addition & 1 deletion exercises/concept/file-sniffer/.docs/instructions.md
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Expand Up @@ -26,7 +26,7 @@ FileSniffer.type_from_extension("txt")

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

Implement the `type_from_binary/1` function. It should take a file (binary) and return the media type (string) or nil if the extension does not match with the expected ones.
Implement the `type_from_binary/1` function. It should take a file (binary) and return the media type (string) or nil if the file signature does not match with the expected ones.

```elixir
file = File.read!("application.exe")
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