I am trying to understand how this piece of self-replicating code works (found here), but the problem is I can't get it to run as-is:
class c {
static void Main(){
string s = "class c{{static void Main(){{string s={0}{10};System.Console.Write(s,(char)34,s);}}}}";
System.Console.Write(s,(char)34,s); //<<-- exception on this line
}
}
It's throwing an exception on writeline: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
Can someone help - in particular about the formatting option {0}{10}?
I got it working like this (see below) but it's longer than the original - I am curious how the original could have worked as-is in the 1st place:
class c {
static void Main(){
string s = "class c{{static void Main(){{string s={0}{1}{2};System.Console.Write(s,(char)34,s,(char)34);}}}}";
System.Console.Write(s,(char)34,s,(char)34);
}
}
I think there is a pair of braces missing - instead of
{10}
it should read{1}{0}
.Could the original work with?
I believe that the original was supposed to look like this:
I.e. the
{0}{10}
should just be changed to{0}{1}{0}
.The
{0}
in the format string is used to put the quotation marks before and after the string.