Примеры кода, синтаксически валидного и одинаково работающего в нескольких языках

			/*<?php
//*/public class PhpJava { public static void main(String[] args) { System.out.printf("/*%s",
//\u000A\u002F\u002A
class PhpJava {
    static function main() {
        echo(//\u000A\u002A\u002F
        "Hello World!");
}}
//\u000A\u002F\u002A
PhpJava::main();
//\u000A\u002A\u002F
		

			public class JavaCSharp { public static void 
	//\u000Amain
	//\u000A\u002F\u002A
	Main//\u002A\u002F
	(String[] args) { 
	//\u000ASystem.out.printf("%s",
	//\u000A\u002F\u002A
	Console.WriteLine(//\u002A\u002F
//\u000Anew Object[]{
      "Hello World!"
//\u000A}\u000A
      		);
}}
		

			# define x u	/*	 	   v
#	:::::::::::::::::::>>>>>>>$$$a"muroftih"#[>:#,_@]
eval 'echo "hitforum";exit';sub echo { print	"@_\n"}	 	  	
__END__>++++++++++>++++++++++[>+++++++++++>++++++++++	
+<<-]>------.+.>++++++.<---.+++++++++.>--.+++     			 	  
.<--.<<.	*/
main() { printf ("hitforum\n"); }
		

			# /* [	<!-- */ include	<stdio.h> /* 	\
	#`{{coding=utf-8\
"true" if 0 != 0 and	q != """0"	;	`	\
	\
if [ -n "$ZSH_VERSION" ]; then		 		 	\
	\
    echo exec	echo I\'m a zsh script.; \
	\
elif [ -n "$BASH_VERSION" ]; then		    	\
	\
    echo exec	echo I\'m a bash script.; \
else	\
    echo exec	echo	I\'m	a sh	script.;		\
fi`;	#!;#\
BEGIN{print"I'm a ", 0 ? "Ruby"	:"Perl",	" program.\n";	exit; }  
	#\
%q~     		 	  	
	
set =dummy 0; puts [list "I'm"	"a"	"tcl"	"script."]; exit	  
	
all: ; @echo "I'm a Makefile."		  	 	\
	#*/
/*: */ enum {a, b}; 			  		\
	\
static int c99(void) {  			    
	
 #ifndef __cplusplus /* bah */		    	
	
unused1: if ((enum {b, a})0) 		   		\
	(void)0;
 #endif    		  	 	
	
unused2:    return a;	     \
}	\
static int trigraphs(void) {  			    \
	\
    return sizeof	"??!"	==	2;  	 \
}	\
char X;    		 				\
	\
int main(void) {   		  			\
	\
    struct X	{		  	 \
	\
     	char	a[2];    	\
	};\
    if (sizeof(X)	!=	1) {		 	\
	\
printf("I'm a C++ program (trigraphs %sabled).\n",	 			 \
	\
     trigraphs()	? "en"	: "dis");\
	\
}else if (1//**/2


)unused3 : { ; \
        printf("I'm a C program (C%s, trigraphs %sabled).\n", \
               c99() ? "89 with // comments" : "99", \
               trigraphs() ? "en" : "dis"); \
    } else { \
        printf("I'm a C program (C89, trigraphs %sabled).\n", \
               trigraphs() ? "en" : "dis"); \
    } \
    return 0; \
} /*
 # \
\begin{code}
import Prelude hiding ((:)); import Data.List (intercalate); import Language.Haskell.TH; import Data.String; default (S, String, Integer, Double); data S = S; instance Eq S where { _ == _ = False }; instance IsString S where { fromString = const S }; ifThenElse c t e = case c of True -> t; False -> e
cPP = False; {-
#define cPP True
-} main :: IO ()
main = putStr ("I'm a Literate Haskell program" ++ bonus ++ ".\n") where
  _ = (); bonus | null details = "" | otherwise = " (" ++ details ++ ")"
  details = intercalate ", " [ name | (True, name) <- extensions ] :: String
  extensions =
    (bangPatterns,              "BangPatterns"             ) :
    (templateHaskell,           "TemplateHaskell"          ) :
    (rebindableSyntax,          "RebindableSyntax"         ) :
    (magicHash,                 "MagicHash"                ) :
    (overloadedStrings,         "OverloadedStrings"        ) :
    (noMonomorphismRestriction, "NoMonomorphismRestriction") :
    (scopedTypeVariables,       "ScopedTypeVariables"      ) :
    (cPP,                       "CPP"                      ) :
    (unicodeSyntax,             "UnicodeSyntax"            ) :
    (negativeLiterals,          "NegativeLiterals"         ) :
    (binaryLiterals,            "BinaryLiterals"           ) :
    (numDecimals,               "NumDecimals"              ) : []
  (!) = (!!)
  bangPatterns = [True] ! 0 where foo !bar = False
  templateHaskell = thc $(return (TupE []) :: ExpQ)
  rebindableSyntax = null (do { [()]; [()] })
    where _ >> _ = [] :: [()]
  magicHash = foo# () where
    foo = ['.']; "." # _  = False; foo# _ = True
  overloadedStrings = "" /= ""
  noMonomorphismRestriction = show foo == "0" where
    foo = 0
    bar = foo :: Double
  unicodeSyntax = let (★) = True in (*) where
    (*) = False
  negativeLiterals = -1 == NNa
  binaryLiterals = let b1 = 1 in 0b1 == 1
  numDecimals = show 0e0 == "0"
  scopedTypeVariables = stv (0 :: Double) == "0.0"
data{- = -} NN = NNa | NNb deriving Eq; instance Num NN where { fromInteger _ = NNa; negate _ = NNb; _ + _ = NNa; _ * _ = NNa; abs _ = NNa; signum _ = NNa }
instance{- = -} (Num a) => Num (e -> a) where { fromInteger = const . fromInteger; negate = (.) negate; abs = (.) abs; signum = (.) signum; x + y = \e -> x e + y e; x * y = \e -> x e * y e }
class THC a where { thc :: a -> Bool }; instance THC () where { thc _ = True }; instance THC (Q a) where { thc _ = False }; class (Show a, Num a) => STV a where
  stv :: a -> String
  stv = const $ show (f 0) where
    f = id :: a -> a
instance STV Double -- : \
\end{code}

 # \
]>++++++++[<+++++++++>-]<+.>>++++[<++++++++++>-]<-.[-]>++++++++++ \
[<+++++++++++>-]<-.>>++++[<++++++++>-]<.>>++++++++++[<++++++++++> \
-]<- - -.<.>+.->>++++++++++[<+++++++++++>-]<++++.<.>>>++++++++++[ \
<++++++++++>-]<+++++.<<<<+.->>>>- - -.<+++.- - -<++.- ->>>>>+++++ \
+++++[<+++++++++++>-]<- - -.<<<<<.<+++.>>>.<<<-.- ->>>>+.<.<.<<.> \
++++++++++++++.[-]++++++++++""" else 0
 # \
from platform import * # \
print("I'm a Python program (%s %s)." % # [-][ \
(python_implementation(), python_version())); """--><html><head>
<!--:--><title>I'm a HTML page</title></head><body>
<!--:--><h1>I'm a <marquee><blink>horrible HTML</blink></marquee> page</h1>
<!--:--><script language="JavaScript">
<!--: # \
setTimeout( // \
   function () { // \
      document.body.innerHTML = "<h1>I'm a javascript-generated HTML page</h1>"; // \
   }, 10000); // \
//-->
</script><!--: \
</body></html><!-- }} # \
say "I'm a Perl6 program."; # """ # */
 #define FOO ]-->~