হাস্কেল, ১৯
(\xx@2012->xx)$2012
বা, একটি সম্পূর্ণ প্রোগ্রাম হিসাবে,
29
main=print$(\xx@2012->xx)2012
আরও কিছু মজার জন্য:
(\l@(_:_:t:[])->t:l)['0'..'2']
যেটি এমনভাবে সংশোধন করা যায় না যে কেবল একটি রানটাইম ত্রুটি দেয়, আমরা সেই তালিকাগুলির তালিকাগুলিতে তথ্যগুলি এনকোড করতে পারি যা কেবলমাত্র একটি চরিত্রের পরিবর্তনগুলি ব্যবহার করে সংশোধন করা যায় না, অর্থাৎ
map(head.show.length)[[(),()],[],[()],[(),()]]
এটিকে আরও পরিমার্জনযোগ্য (নিরাপদে) তৈরি করতে, আমরা নিজেরাই সংখ্যাটিকে তালিকার উপাদান হিসাবে ব্যবহার করতে পারি - কেবল 'প্লাস' এর জন্য কমা বিনিময় রোধ করতে স্ট্রিং তৈরি করতে হবে:
map(head.show.length)[["2012","2012"],[],["2012"],["2012","2012"]]
যেহেতু এই স্ট্রিংটি কেবলমাত্র অভিব্যক্তির ফলাফল, আমরা আবার এটির সাথে এটিও তৈরি করতে পারি - হাস্কেলের অলসতার জন্য কোনও সমস্যা নয়
64 72
a=map(head.show.length.init)[[a,a,a],[a],[a,a],[a,a,a]]
main=putStrLn a
এখানে init
"বিয়োগ এক, তবে অ-নেতিবাচক" হিসাবে কাজ করে।
আমরা অতিরেক স্কিম টাইপ সিস্টেম অন্তর্ভুক্ত করতে পারে এবং তারপর একটি উপায় যে নম্বর লিখতে
পারে এক-অক্ষর পরিবর্তনের সঙ্গে পরিবর্তন করা ...
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"
)
আপনি এখন যে কোনও একটিকে তদ্বিপরীত পরিবর্তন করতে u
পারেন p
, তবে এটি সর্বদা দ্বিতীয় টিপল উপাদানটিতে তালিকার স্ট্যাকিংগুলির গভীরতাকে বিশৃঙ্খলাবদ্ধ করবে এবং এর ফলে একটি সংকলন-সময় ত্রুটি ট্রিগার করবে।
এই ধারণাটি আরও প্রসারিত করা যেতে পারে যাতে পুরো পাঠগুলি সংক্ষিপ্তভাবে এনকোড করা যায়, পড়া এবং সম্পাদন করা সহজ এবং একক অক্ষরগুলি সংশোধন করা থেকে এখনও নিরাপদ।
এবং আরও একটি ...
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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|Ηχ |Κg |Θo |Ζh |Ψj |Ψu |Ωφ |Δμ |Γa |Bν |Ιε |Oz |Νq |Υp |Qλ |Υc |Υy |Kc |Kh |Ew |Wγ |Νβ |Ωλ |Οξ |Zι |Yr |Sυ |Γπ |Bm |Μj |Pa |Os |Χδ |Κδ |Εx |Iγ |Eη |Fλ |Tγ |Yλ |Hξ |Φq |Τξ |Ql |Δn |Zn |Ot |Sa |Φψ |Nμ |Ξr |Ξc |Φj |Gl |Oλ |Rπ |Am |Mο |Gx |Fd |Cg |Χu |Lι |Wv |Ζt |Jυ |Pσ |Σκ |Wκ |Pv |Ιg |Ωι |Δx |Φl |Eb |Δυ |Cr |Nχ |Ογ |Νφ |Gu |Ασ |Λi |Rτ |Eh |Xη |Md |Wm |Tt |Πα |Υe |Βk |Ju |Dρ |Χβ |Οs |Γi |Kι |Κe |Mm |Χf |Oκ |Vb |Γβ |Οy |Vv |Νϑ |Hl |Λα |Wξ |Om |Βφ |Ρp |Φβ |Βb |Αυ |Υδ |Χφ |Pλ |Νρ |Υλ |Ul |Kγ |Qc |Νm |Πz |Hφ |Es |Ψπ |Xm |Xξ |Tν |Eλ |Ao |Ak |Ka |Ζη |Xk |Γψ |Βπ |Fβ |Βρ |Xx |Βζ |Iτ |Pϑ |Εb |Ψγ |Τk |Gm |Yn |Xν |Νu |Hϑ |Εr |Τπ |Uw |Mh |Og |Μυ |Tj |Λν |Qm |Xn |Ην |Νi |Kη |Zv |Ιι |Ση |Yk |Dx |Aχ |Ou |Fy |Cα |Θl |Γκ |Ax |Vκ |Cn |Cλ |Ξϑ |Wε |Υl |Ψt |Ωa |Θe |Ξω |Ηo |Ll |Bζ |Kw |Αβ |Δc |Oυ |Βj |Jβ |Νε |Eϑ |Ξg |Tz |Cc |Ry |Sρ |Ψz |Yα |Pq |Υg |Jn |Vμ |Σk |Ck |Ωt |Zg |Pι |Hω |Λλ |Aμ |Wλ |Ιλ |Βc |Ξa |
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| N2012 deriving(Enum); instance Show Counter where show = show . fromEnum