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Obfuscated code

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Got some code which would take a Perl grand master to understand without running it? Post it in this section so we can stare at it in awe.

Word of warning, though: Don't be too cocky with your post — almost inevitably someone will post a reply that does the exact same thing in even fewer characters!

New Less than Readable Code
Christmas Eve Obfu
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by tobyink
on Dec 24, 2013 at 08:18
    use v5.14; use strict; use warnings FATAL => 'all'; our $days_until_christmas = 1 * map s([+] )( )gix &&printf( '%5s' .'%-4s' .'%s',$_, substr(~~~~ reverse,!$^C) =~y[/(] [\\)]r,$/ ),my@ xmas= qw 1 +.- _(+" (_++: /+' +(_/^ 1;1 ;1;

    Update: I've posted the Technicolor™ version to

    use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name
Slightly Srandom JAPH
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by BenGoldberg
on Dec 23, 2013 at 19:50
    This isn't super obfuscated, but it's got some coolness to it, nonetheless :)
    print sort {4-rand 9} split //, HnlcrhJsre_Pt_aeAeuot_kr if srand JAPH +;
oh for y///e
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by bhildred
on Dec 10, 2013 at 15:54

    too bad this doesn't work.

asccii modern art obfu
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by perlaintdead
on Nov 29, 2013 at 22:39

    Trying to step my game up and brake my bad habit of putting cyphered text in an array every obfu. Enjoy my ASCII modern art and the Easter eggs.

    WARNING:This program is resource heavy!!!

    Built with v5.16.3

    no warnings;no strict; while(perl_is_not_dead){ + goto ghs;sub jerry{v3}gns:$ b=~s/^.{3}//;our @change=((9,65),23);$ feld =gn::n;package gn 4.242{sub n{sr +and $ VERSION}package queen; sub boxxy{pop @change and $ boxxy="love, light, joy, and hap +pyness"}} ;goto g.n.S;ghs:sub dx{$i=2e-2 ;@a=queen'boxxy;$i+=1while$a[0]=~s[(?#\x89\x90*{,23}).(?#%?\x59)+?(\ +W{1})][];@a ,$i}sub q{&^>=9*&^+$^%$^^} package split{sub b{@change[eof fileno *STACKFRAME],@change}}$ b +=~q((?{$b=substr lc$~,0,-2,}));goto gns;gnS:;sub n{ return $_ >> dx}sub _:{sub(;){( "\x3c".(sqrt(.218_01330_1491_73 +7)/rand+oct+1e2+4x~~2) .chr.chr 0x.99=>)[${(}].$ b.( (chr(-(&dx)*-25.5).chr(&dx*25.5) .chr((ord reverse split$]=>$~ +,jerry sin$feld) - -(__METAL__)-"\m/"-_-"\m/"-(__METAL__)- -($!+qw^1 *&9$# @^[quot +emeta${!} ]^((int exp(v6 cmp v5)) **gn::n)))x2 .$/)=>(ref*a+ +%gin).[*62 ,*41])[$#b+3%2+hex( gns)],(prototype ge rea +dpipe)[tell]}}} continue{printf(::_([])->(( +)),)}+cream and sugar
JAPH with a smiley
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by choroba
on Sep 03, 2013 at 18:20
    I think the idea is not bad, but the JAPH phrase is a bit long for that, so it gets boring quickly.
    sub e{sub _{-72} er}eval($/='sub J{map{substr$/,ref('.q:)?pop@$_\:$_,$ +$_[0]||1} @_}sub f{uc join "system",J(@_)}print J 4=>1,[2,13],-1,010-1,[ _ ],42- +020,hex"e ";print+h,e,$",f(__LINE__*2+2),e,qw,l,,J(-1,-hex 20),q{ack},e,J hex or +d(0)/4 :)
    A variant that is a bit profane:
    لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
Felling a tree JAPH
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by MidLifeXis
on Aug 30, 2013 at 10:28

    Still not a great JAPH, and it exceeds 4x79, but it is more obfuscated than yesterday's.

    # Cutting down a tree $t=t->p;$t->g;$t->f;sub t::p{@n=map{x($_)}'Just another Perl hacker,'= +~m/(.)/g; bless{n=>\@n},$_[0]}sub t::g{$_[0]->{t}=$_[0]->f(0,$#{$_[0]->{n}});$_[ +0]->{n}=1 ;$_[0]}sub t::f{($a,$b,$e)=@_;$m=int(($b+$e)/2);$f=$_[0]->{n}[$m];$l=$ +_[0]->f( $b,$m-1)if$b<$m;$r=$_[0]->f($m+1,$e)if$m<$e;bless [$l,$f,$r],'f'}sub t +::f{$_[0] ->{t}=1}sub x{bless \$_[0],"x"}sub x::DESTROY{print${$_[0]}}sub f::DES +TROY{$_[0 ]->[$_]=1 for(0..2)}


Destructive JAPH
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by MidLifeXis
on Aug 29, 2013 at 10:48

    Starting my foray into JAPH to explore various aspects and corners of the language. Not necessarily obfuscated, but more using different aspects of Perl to accomplish the goals of a JAPH. 4x79 code max, Just another Perl hacker, output to stdout. I am hoping to explore a different technique each day, but it will probably devolve to one a week.

    This implementation is pretty obvious how it works, but it uses the DESTROY method of object destruction to output the characters of the output.

    @x = map{ x($_) } split('','Just another Perl hacker,'); shift(@x) while @x; sub x{ bless \$_[0],"x"} sub x::DESTROY{print ${$_[0]}}


Undefined JAPH
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by ateague
on Aug 28, 2013 at 19:08

    It is simply amazing what Perl's undef can do if you just ask it nicely. I got mine to print JAPH.

    UPDATE! Spoiler available!

    #!/usr/bin/perl {{{{THE:{{{{END:{{{{IS:{{{{THE:{{{BEGINNING:{{{{IS:{{{{THE:{{{{END{{{{ no strict; no warnings;# Where we're going, we won't need eyes to see. undef->('J')->('u') ->('s')->('t') ->(' ')->('a') ->('n')->('o') ->('t')->('h') ->('e')->('r') ->(' ')->('P') ->('e')->('r') ->('l')->(' ') ->('h')->('a') ->('c')->('k') ->('e')->('r') ->((qq(\n)));# ALONE CANNOT YOU IT RESIST ;};};};};};};};};};};};};};};};};};};};};};};};};};};};};};};};};};};} use strict;use warnings FATAL=>'all';use utf8;use 5.014;# It begins... eval((eval(join'',join'',map{unpack'C/(C.*/X/xa@)'}split/\n/,<<'MAGIC' "BC8D%5/.31420-A69=(#:*$+<@;?)&',>7""$''((*,,;<=>AADTaaabchijkmnopsu{" ">DC95'A<?36;(%B&-#4*.=@8)$2+/0,17:$$''((())),,,1?_aacccdehknoppruuv{" "?'=@:(#8)721*3%&CA><;B./-$9506+,D4$$''(()))),//046:;[]^__diloprrst}}" MAGIC ))->(# LASCIATE OGNI SPERANZA VOI CH'ENTRATE. LIBERATE TUTAME EX JAPH! <<'MORE MAGIC' $_='open(necromicon)and(seek(undef,undef)) ((4SO)EPL(M)(6)(yv5((76aW((65(s&gxVH7Z(2f) (2)ud)b))J06)r7m(6i)oO)L)(MF)T6(yv(E(6a((( sgVxHZE(f)(!61P)u20d)b))J6)$76rm9(i7)So66( 52O07))L9)6(FS75M)2(07((y5)7V0)v2((UCa(((W sg0TAxH4Z(fE)udW)65b))J!P76)rm65(i)oO)7L)( M)(22V)(yv0R67((a(6(F6(sEgxY6HZ(Ef)6(1)ud2 )Tb06))JC)rm(i )o6O)L)5%(VTW7 U4VM2)(y0v((a( (sgxH7Z(f)(R)9 6WFud)%bV)J)rm (i7Q)o5VO2)06L )#4(6FV7M)76E( y0vA((a((S(Wsg !4Ex6HZ5(Sf7)u d)b6))6J)r!m(i )S57oSO)L)(M2U )2067(6yFv((6E 6aE6(VW((sgxH1 Z(f)ud2)b0)R7U 2)J7)56rm(E2iU )o0TO)LQ)6(M)( y1v((a(7T(2(6s F7gxHZ(fT)u5Td )b))&J6)rm(Ei) o64O)L)(M)20(6 T1)6(y%v(E6(Ta ((#(T(( xUH)Z(0f6)ud4)b)6)5J)rm7(i)oO)XL)3(M)(yR#Uv((6a((s57(gU27(x4HWZ))(2f0% )(79)udVb6)F7T)50VJ)AUV4rE65m7(i)oO)L)V(MV6)#6(yv(572(a(2((sgxH0Z(f676 )(F6uEd6R))b)E)J)PrS6mY(i)oO)L)(M)(12yv((a((0(sgxHZ6RD"(f61)6(B6S)ud)b 52))J)rm(i)oOP)L0)(7M96)(F7)(yv((a(5((sRg(((x)H20)6ZU)(3W7f)(27)ud%V)9 b))JT)rVU2m(Ci0A)VV4oO)L)(VE$M)6(5)(yvS((aS7(((s6gx65HZ(f)W7(2)20u6d)b U)76)J)rm(i)oWOR)FL6)(EM)6(yEv6((a(V((s"g(xH(W1Z))(20P7f)(W3)ud)b))RJ) 6rm(i1)WoO)L)( M7)Y(Vyv(9(2a( ((s0gx6HZ76%(f )uFdV)T6bF)6)J 4W)6rm(Ti279)o O)6L)(50RMA4&E )U("6)U(y57v(P 6(Sa((sg$xUH65 Z(f)7u22d0)67b "6)FJ6)rEm(i)o O)L)(M)(6E)(6y vS1((a(20(7((P RUsg)xH4Z(6fW) 5u6d%VTC6)b)CV U)J2)0r61m(i20 )o(VO)6VC)L6)( M)(9Vyv((a(6(( sg5xH2Z(f"0)61 (u6(E6))d)bS)) J)rm(4i)$2Wo0O 6)"87L)(M5)(7) (27y)Sv4(a((sg xHZ(2f)07ud)b9 6)JF)rm750(iA) ).seek..into.. ; .the.hivemind. .representing. chaos;invoking ..the.feeling. of.chaos;with- ...out.order.. ...the.nezper- dian.hivemind. of.chaos;zalgo ;he.who.waits. ..behind.the.. .wall;ZaLGo;'; undef:japh:{s( [^[:xdigit:]]| [^([:upper:](( )[:digit:]))]) ()xgos;print(( (chr((hex))))) and(((select(( (undef),undef, ((((undef,)))) ,((0.01))))))) for(/(..)/g)}; MORE MAGIC )); __DATA__ _____________________________________________________________ ,`````'X``````/\#`Toto, I've a feeling we aren't in Kansas anymore...`

    I do not believe anyone has used this technique before.
    I do not believe anyone has used this technique before in a JAPH here on Perlmonks. Please let me know what you think.

    Spoilers 'n bits...

Just another JAPH
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by perlaintdead
on Aug 23, 2013 at 21:52

    My internet has been down for the past few days so i did this. difficulty: 6/10

    $|=1;b:my@j=(q(37b), q(b58), q(b57), q(58b), q(16b), q(b48), q(55b), q(b55), q(58b), q(52b), q(b50), q(57b), q(16b), q(40b), q(b34), q(41b), q(38b), q(16b), q(52b), q(b48), q(b49), q(b53), q(b50), q(57b), q(23b));-x\@j;sub vv{return 0x3}sub G{return!NULL}sub q{-e b_ +;} my$b=not-9674;sub B{return map{b_}split NULL,shift,oct 2}sub w{return +\0x2,} foreach$bb(@j){unless($bb!=m-^b-){BEGIN{use MIME::Base64;*b_=\&pop and + *db=\&decode_base64} sub U1RET1VU{caller undef,-w,&q;}$b=vv- w;vv-W;$bb=substr$bb,$|;}$bb=$ +bb/(q(.). 0b0101); $bb=$bb+_+print m!!xg if!! B$b;syswrite db q; U1RET1VU; ,chr$bb;$b=G;}eof;
YAPC::EU::2013 Go Perl golf contest
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by nobull
on Aug 13, 2013 at 10:35 sponsors of YAPC::EU::2013 set this challenge based on the game of Go:
    1. Problems are given for a Go training board with the size of 9×9.
    2. Black moves first.
    3. There are no stones already captured on the board.

    Input: nine lines which represent the playing board are sent to STDIN. Lines consist of spaces (for vacant points on the board), "w" symbols (for white stones) and "b" symbols (black stones) and end with the new line symbol ("\n").

    Output: сoordinates (row and column numbers separated with a space, counted from one) of points, a move to which results in the capture of white stones. Results must be sent to STDOUT, one point per line. Results must contain all the possible moves on the board which would lead to the capture of white stones. Points are to be output in the order of their position on the board (left to right, top to bottom).

    This is my first attempt at Perl-golf and (because BooK wasn't here this year) I actually won with 205 characters. (Woo hoo!)

    #!perl $b=++$/x11 .<>;for$i(9..99){if(($x=$b)=~s/^(.{$i}) /$1x/s){while($x=~/ +w/g){$_="$`W$'";1while s/w((?<=W.{10})|(?<=W.)|(?=.{9}W|W))/W/s;/W((?<= .{10})|(?<= .)|(?=.{9 +} | ))/s||$i=~/./+(print"$& $'\n")+last}}}
    Or with comments and whitespace
    #!perl $b = ++$/ x 11 . <>; # $/='1' (not prese +nt in input). Slurp STDIN. # Prepend '11111111 +111' so top left is at 11. # Leave the "\n" in + to act as border and make # rows 10 so linear + pos is also row/col. for $i (9..99) { # Scan all possible + cells (including border). if( ($x=$b) =~ s/^(.{$i}) /$1x/s ) { # If cell is ' ' pl +ace 'x' in a copy of board. while( $x=~/w/g ) { # Consider each 'w' + in turn and $_ = "$`W$'"; # copy board high +ighing that 'w' as 'W'. 1 while # Until you run out +, s/w((?<=W.{10})|(?<=W.)|(?=.{9}W|W))/W/s; # highlight a nei +ghbouring 'w'. /W((?<= .{10})|(?<= .)|(?=.{9} | ))/s # Find a 'W' neighb +ouring a ' '. || # If there is no su +ch peg we have captured. $i=~/./ + # Split row number +out of cell number. (print"$& $'\n") + # Print row and col +unm. last # Advance to next p +ossible cell. } } }

    Improvements from the Monks welcome.

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