[erlang-questions] Binary pattern matching

[Valentin Micic]

My sincere apology if this has been discussed before…
I vaguely remember that a number of years ago, one was able to write something like this:

some_function( Offset, <<_:Offset/binary-unit:8, Value/binary>> ) -> …

without (Erlang R21.1) compiler complaining with: variable Offset unbound

Was I dreaming? 

Thanks in advance

V/

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