On 20.02.2018 00:43, Timon Gehr wrote: > > void main(){ > auto (infile, colname, repl, outfile) = > args[1..$].unpack!4("Invalid args\n"); > } Actually: void main(string[] args){ auto (infile, colname, repl, outfile) = args[1..$].unpack!4("Invalid args\n"); }