Haskell, 19
(\xx@2012->xx)$2012
หรือเป็นโปรแกรมเต็มรูปแบบ
29
main=print$(\xx@2012->xx)2012
เพื่อความสนุกสนานอีกเล็กน้อย:
(\l@(_:_:t:[])->t:l)['0'..'2']
เพื่อให้ได้สิ่งที่ไม่สามารถแก้ไขได้ในลักษณะที่ทำให้เกิดข้อผิดพลาดรันไทม์เราสามารถเข้ารหัสข้อมูลในความยาวของรายการซึ่งไม่สามารถแก้ไขได้โดยใช้การเปลี่ยนแปลงตัวละครเพียงตัวเดียวเช่น
map(head.show.length)[[(),()],[],[()],[(),()]]
ในการทำให้สามารถแก้ไขได้มากขึ้น (อย่างปลอดภัย) เราสามารถใช้ตัวเลขนั้นเป็นองค์ประกอบลิสต์ได้ - เพียงแค่ทำให้มันเป็นสตริงเพื่อป้องกันการแลกเปลี่ยนคอมม่าสำหรับเครื่องหมายบวก ':
map(head.show.length)[["2012","2012"],[],["2012"],["2012","2012"]]
เนื่องจากสตริงนี้เป็นเพียงผลลัพธ์ของนิพจน์เรายังสามารถแทนที่มันได้ด้วย - ไม่ใช่ปัญหาด้วยความเกียจคร้านของ Haskell
64 72
a=map(head.show.length.init)[[a,a,a],[a],[a,a],[a,a,a]]
main=putStrLn a
การinitกระทำที่เป็น "ลบหนึ่ง แต่ไม่ใช่เชิงลบ" ที่นี่
นอกจากนี้เรายังสามารถรวมระบบประเภทในรูปแบบความซ้ำซ้อนแล้วเขียนหมายเลขในวิธีที่
สามารถแก้ไขได้ด้วยการเปลี่ยนแปลงหนึ่งตัวอักษร ...
u :: Enum a => (a,[b])->(a,b)
u(a,[b]) = (succ a , b)
p :: (a,b)->(a,[b])
p(a,b) = (a,[b])
ι :: (Int,()) -- Integral type to make sure you can't make it 0/0
ι = (\n -> (n-n,()))0
twothousandandtwelve = map(head.show.fst) [ u.p.u.p$ι , ι , u.p$ι , u.p.u.p$ι ]
( GHCi> twothousandandtwelve≡> "2012")
ตอนนี้คุณสามารถเปลี่ยนค่าใด ๆuให้pกลับกันได้ แต่นั่นจะทำให้ความลึกของรายการซ้อนกันในองค์ประกอบ tuple ตัวที่สองและทำให้เกิดข้อผิดพลาดในการรวบรวม
ความคิดนี้สามารถขยายเพิ่มเติมในลักษณะที่ข้อความทั้งหมดสามารถเข้ารหัสขนาดกะทัดรัดง่ายต่อการอ่านและแก้ไขและยังปลอดภัยจากการปรับเปลี่ยนอักขระเดี่ยว
และอีกหนึ่ง ...
main = print N2012
data Counter = Τv |Πy |Υj |Cε |Ho |Φϑ |Ωm |Sg |Πl |Pt |Yϑ |Γσ |Km |Φz |Εα |Av |Ζρ |Ηρ |Εv |Κs |Rζ |Γϑ |Οc |Dι |Rυ |Λd |Bγ |Wt |Xε |Ωη |Ιa |Hζ |Ed |Qj |Wπ |Κw |Qu |Γο |Oι |Mσ |Ωκ |Yg |Kυ |Aj |Du |Λζ |Nζ |Θτ |Pε |Yf |Βa |Τγ |Qx |Jη |Pδ |Iq |Ωn |Fv |Kl |Ψη |Δj |Θσ |Hd |Θq |Υs |Ht |Fρ |Jh |Lζ |Hμ |Υι |Ρζ |Ρv |Dυ |Wo |Iχ |Iζ |Γy |Kr |Sσ |Iμ |Μο |Xw |Εμ |Cσ |Yξ |Aq |Jf |Hσ |Oq |Hq |Nυ |Lo |Jκ |Ρz |Οk |Θi |Θα |Αη |Gh |Lξ |Jm |Ων |Zu |Μc |Qη |Κγ |Αψ |Χζ |Hρ |Γρ |Uϑ |Rj |Χγ |Rw |Mω |Πζ |Θρ |Ωd |Υh |Nt |Tη |Qψ |Θω |Εχ |Iw |Σx |Ηn |Mτ |Xt |Yx |Φε |Hh |Wη |Mf |Ψχ |Νγ |Βξ |Aϑ |Qp |Τϑ |Φm |Uy |Gy |Cd |Bχ |Λl |Οτ |Εa |Df |Li |Aι |Yi |Νκ |Vc |Γx |Φρ |Φp |Nξ |Kf |Tw |Λξ |Φn |Λa |Oψ |Υχ |Fψ |Xω |Τq |Οσ |Σj |Θψ |Το |Νr |Ιπ |Τi |Dτ |Φf |Μn |Χm |Ηε |Wa |Αχ |Uδ |Λf |Ρu |Qk |Wα |Uρ |Τζ |Lg |Qy |Τν |Jϑ |Βδ |Mε |Μι |Πβ |Bη |Eκ |Κz |Ηh |Fδ |Σp |Εγ |Qφ |Μτ |Νχ |Ψν |Pw |Χz |Εϑ |We |Nπ |Tυ |Wg |Bh |Tρ |Ζν |Λm |Ag |Dσ |Πι
|Oη |Nν |Χl |Χp |Sξ |Πt |Οϑ |Wο |Yη |Cp |Tm |Ξs |Εβ |Ιb |Ρρ |Fs |Um |Ep |Jλ |Rρ |Ρξ |Ua |Οq |Γξ |Zη |Nη |Qτ |Nc |Ez |Xσ |Yφ |Ρy |Yε |Ετ |Φκ |Λω |Ωα |Μκ |Φw |Mt |Tk |Sf |Ηξ |Οb |Νπ |Κε |Mι |Kz |Vi |Ξx |Ψs |Αο |Qδ |Kt |Aσ |Οm |Ψδ |Λγ |Ακ |Hα |Wϑ |Τμ |Γγ |Jδ |Ικ |Ηϑ |Μp |Zo |Κn |Qz |Δe |Pe |Jο |Qι |Tu |Jν |Ξμ |Πω |Αm |Θw |Nε |Dy |Zξ |Υα |Dβ |Hο |Χv |Gr |Ωl |Jb |Σl |Vζ |Ξ |Nx |Qs |Βh |Qg |Νx |Co |Rσ |Νυ |Χg |Ρt |Wy |Ηκ |Οa |Yμ |Uj |Uξ |Op |Μr |Ζα |Ξw |Mυ |Ar |Ργ |Zζ |Sv |Vy |Βo |Κι |Vϑ |Ξι |Uζ |Fμ |Su |Ιξ |Fϑ |Hi |Hw |Mv |Χχ |Θg |Sν |Pp |Mπ |Pk |Bκ |Lυ |Ρλ |Ιr |Uλ |Νo |Κο |Nh |Lε |Sw |Ξλ |Zυ |Mr |Bv |Κπ |Aγ |Dv |Pd |Ξσ |Μg |Oπ |Χξ |Nj |Kψ |Ξπ |Mκ |Gn |Ωe |Gγ |Pν |Yz |Nl |Οο |Ic |Pz |Ξf |Νω |Υμ |Ηq |Nw |Θm |Μx |Jε |Φy |Οz |Ξz |Ti |Οψ |Φγ |Tψ |Oγ |Zϑ |Ιk |Σw |Rf |Υi |Ωp |Vr |Υτ |Xl |Οβ |Πb |Δν |Οu |Jα |Ττ |Κl |Pf |Iκ |Gk |Πe |Σu |Δβ |Ωh |Nλ |Ξt |My |Πs |Βr |Mγ |Δω |Le |Zρ |Θv |Σs |Ηd |
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| N2012 deriving(Enum); instance Show Counter where show = show . fromEnum