Reading by character and by line from stdin

[Trass3r]

> I'd like to know how to read from stdin one character at a time, read  
> with whitespace as a delimiter, and read line by line.

A nifty way of reading by byte is the undocumented (only the writer is  
documented):

import std.stdio;
void main()
{
     foreach(c; LockingTextReader(stdin))
         ....
}

by line is
     foreach(c; stdin.byLine)

and you should also be able to abuse the function to split by whitespace:
http://d-programming-language.org/phobos/std_stdio.html#ByLine
See the terminator parameter.