Programming Exercise #7: Quine

[Tolnaftate2004]

Hello all, and welcome to the return of Programming Exercises! If people still like this, maybe I'll do more.

Your mission, should you choose to accept it, is to write a quine. What is a quine you might ask? Well, a quine is a bit of self-replicating code. In particular, it is a code that produces its own source code as its only output.

Write as short a quine as you can!

This is unlike any previous exercise, but you may also want to take a look at exercises #1, #2, #3, #4, #5, and #6 for previous discussions or for fun.

e: Now open for suggestions for the difficulty of PE#8.

[cbk1994]

PHP Code:

function onCreated() {
  temp.lines.loadLines("weapons/weaponQuine.txt");
  lines.saveLines("data/output.txt", false);
} 


Do I win?

[Tolnaftate2004]

Originally Posted by cbk1994

Do I win?

I had a feeling this would be the first post. Very clever.

Let's try to avoid joining classes, using public functions, and using file I/O. The script should be self-contained and independent of filename and other files.

[Deas_Voice]

urgh, i can only come up with infinite-code

Edit:
could just post it here for others to see~

PHP Code:

function onCreated() {
  echo("
    function onCreated() {
    echo(/"function onCreated() {
      /*infinity echos here*/ 
      }/");
    }
  ");
} 


[fowlplay4]

PHP Code:

function onCreated() { temp.q = '"'; temp.s = "function onCreated() { temp.q = '%s'; temp.s = %s%s%s; temp.s = format(temp.s, temp.q, temp.q, temp.s, temp.q); echo(temp.s); }"; temp.s = format(temp.s, temp.q, temp.q, temp.s, temp.q); echo(temp.s); } 


[DeCeaseD]

Don't get this at all.. you should make programming exercises for people who are at a more average level.

[fowlplay4]

Originally Posted by DeCeaseD

Don't get this at all.. you should make programming exercises for people who are at a more average level.

There's not much to it, write code that outputs itself.

[xAndrewx]

which helps out the graal community in so many ways!! o_o

[Fulg0reSama]

It helps polish the experienced scripters skills.

[salesman]

So by not posting anything, everyone completed the exercise in a way? ez

[coreys]

Originally Posted by salesman

So by not posting anything, everyone completed the exercise in a way? ez

Originally Posted by wikipedia

In some languages, an empty source file is a fixed point of the language, producing no output. Such an empty program, submitted as "the world's smallest self reproducing program", once won the "worst abuse of the rules" prize in the Obfuscated C contest.[1]

[DrakilorP2P]

Probably the most awkward approach possible.

PHP Code:

function quine() {
temp.q=function(s){temp.o="";temp.i=0;for(i=0;i<s.length();++i){temp.c=s.substring(i,1);if(c=="\n")o@="\\n";elseif(c=="\"")o@="\\\"";elseif(c=="\\")o@="\\\\";else o@=c;}return o;};
temp.s="function quine() {\ntemp.q=function(s){temp.o=\"\";temp.i=0;for(i=0;i<s.length();++i){temp.c=s.substring(i,1);if(c==\"\\n\")o@=\"\\\\n\";elseif(c==\"\\\"\")o@=\"\\\\\\\"\";elseif(c==\"\\\\\")o@=\"\\\\\\\\\";else o@=c;}return o;};\ntemp.s=\"STR\";\ntemp.p=temp.s.pos(\"STR\");\nreturn temp.s.substring(0,temp.p)@temp.q(temp.s)@temp.s.substring(temp.p+3);\n}";
temp.p=temp.s.pos("STR");
return temp.s.substring(0,temp.p)@temp.q(temp.s)@temp.s.substring(temp.p+3);
} 


[DeCeaseD]

Originally Posted by Fulg0reSama

It helps polish the experienced scripters skills.

And how exactly do experienced scripters get more experience through doing things they can obviously do? If anything, these exercises should be helping newer scripters learn.

[fowlplay4]

Originally Posted by DeCeaseD

And how exactly do experienced scripters get more experience through doing things they can obviously do? If anything, these exercises should be helping newer scripters learn.

They're more so mental exercises, obviously there's no real practical use to quine's in the Graal world unless you wanted to make some over the top self-replicating virus.

I.e: Reads level links, leaves a mark, moves on to the new levels, and dies upon entering a marked level while wreaking whatever havoc using any side functions it has. The script should be able to remain in the level, and if re-uploaded the replication process begins again.

The newer scripters could at least attempt the exercises, and maybe even do research of their own before giving up.

[Bell]

Think of it as a scripters puzzle game. They do it for fun.