help wantedquestion
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描述
As we always read strings via stdin, we have to guess the type of each input line (via add_dynamic_type). This can lead to errors:
> touch a b
> ls | map filesize # okay
> touch 3
> ls | map filesize # Incompatible input type: expected 'Path', got 'Int'
How should we handle this? Add explicit type annotations? Always assume everything to be a string?