[your code here] minimal hex viewer

[Justin Whear via Digitalmars-d]

// Reads bytes from stdin and writes a hexadecimal view like a 
no-frills xxd.
// All the actual formatting work is done by format's sweet range 
syntax
void main(string[] args)
{
        import std.getopt;
        uint bytesPerLine = 8;
        args.getopt(
                "cols|c", &bytesPerLine
        );
        import std.stdio;
        import std.range : chunks;
        import std.algorithm : map, copy;
        import std.string : format;
        import std.ascii : newline;
        stdin.byChunk(bytesPerLine)
             .map!(bytes => bytes.format!"%(%02X %)%s"(newline))
             .copy(stdout.lockingTextWriter());
}