IO.read
You're seeing just the function
read
, go back to IO module for more information.
Specs
read(device(), :all | :line | non_neg_integer()) :: chardata() | nodata()
Reads from the IO device
.
The device
is iterated by the given number of characters or line by line if
:line
is given.
Alternatively, if :all
is given, then whole device
is returned.
It returns:
data
- the output characters:eof
- end of file was encountered{:error, reason}
- other (rare) error condition; for instance,{:error, :estale}
if reading from an NFS volume
If :all
is given, :eof
is never returned, but an
empty string in case the device has reached EOF.