Function interp_read_lines 

fn interp_read_lines(
    args: &[RValue],
    named: &[(String, RValue)],
    context: &BuiltinContext<'_>,
) -> Result<RValue, RError>

Read text lines from a file path or a connection.

If con is a character string, reads directly from that file path. If con is an integer with class “connection”, reads from the connection’s stored file path or TCP socket.

@param con character scalar or connection integer: source to read from @param n integer scalar: maximum number of lines to read (-1 for all) @return character vector with one element per line