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Lua Code Golf


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#101 Bubba

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Posted 15 November 2013 - 11:06 AM

Okay guys. I've updated the latest challenge - currently, I have put Bit in the lead.

Also, an important change of rules: Challenges may now allow for other languages. Of course, this does not apply to challenges that are ComputerCraft specific or that the author does not allow for.

#102 Symmetryc

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Posted 15 November 2013 - 02:58 PM

View PostBubba, on 15 November 2013 - 11:06 AM, said:

Okay guys. I've updated the latest challenge - currently, I have put Bit in the lead.

Also, an important change of rules: Challenges may now allow for other languages. Of course, this does not apply to challenges that are ComputerCraft specific or that the author does not allow for.
Sorry if you're busy, but when you have the time, could you please update my challenge :P? (the primes one) Thanks in advance.

Edit: 206 Chars
t = term
function m(a)
  w,h = t.getSize()
  s = (k == 200 and s-1 or k == 208 and s+1 or s or 1) % #a
	t.clear()
	for i = 1, #a do
	  p = s == i-1 and ">"..a[i] or a[i]
	  t.setCursorPos((w-#p)/2,(h-#a)/2+i)
	  write(p)
	end
	_,k = os.pullEvent()
  return k==28 and s or m(a)
end

View Posttheoriginalbit, on 15 November 2013 - 08:02 AM, said:

That code is 207, not 206.
Sorry, my change was so minor that I thought I could count the changes rather than have to open up a Word document and repaste the code into there.

Edited by Symmetryc, 15 November 2013 - 04:05 PM.


#103 jay5476

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Posted 15 November 2013 - 07:23 PM

nvm this post guys

Edited by jay5476, 16 November 2013 - 01:06 AM.


#104 AgentE382

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Posted 22 November 2013 - 05:05 PM

View PostBubba, on 15 November 2013 - 11:06 AM, said:

Okay guys. I've updated the latest challenge - currently, I have put Bit in the lead.

Also, an important change of rules: Challenges may now allow for other languages. Of course, this does not apply to challenges that are ComputerCraft specific or that the author does not allow for.
Wait, does this mean that I can post a challenge to make the shortest LASM version of a given function?

#105 Geforce Fan

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Posted 05 April 2014 - 03:51 AM

Challenge: Make a window and tab OS that runs faster than normal shell and is 3 lines and uses no APIs
KIDDING, lol.
Challenge: Make a pastebin-like program that can download, upload, and run pastes.
MUST be shorter than the default one with no loss in functionality.

#106 Lua.is.the.best

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Posted 05 April 2014 - 07:05 PM

OYUS! I might share my VB code :P
Code:
Public Class Form1

    Private Sub GoButton_Click(sender As Object, e As EventArgs) Handles GoButton.Click
        WebBrowser1.Navigate(TextBox1.Text)
    End Sub

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        WebBrowser1.GoBack()
    End Sub

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        WebBrowser1.GoForward()
    End Sub

    Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
        WebBrowser1.GoHome()
    End Sub

    Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
        WebBrowser1.Refresh()
    End Sub

    Private Sub Button5_Click(sender As Object, e As EventArgs) Handles Button5.Click
        WebBrowser1.GoSearch()
    End Sub
End Class
Without whitespace: 738 characters!

Aww.. I just overwrote my challenge..
Lua challenge:
Create a disk formatter! :D

#107 Anavrins

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Posted 05 April 2014 - 07:10 PM

View PostLua.is.the.best, on 05 April 2014 - 07:05 PM, said:

Spoiler
Have you seen the new rule, it's in almost every post of this page...

Edited by Anavrins, 05 April 2014 - 07:10 PM.


#108 Lua.is.the.best

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Posted 05 April 2014 - 07:36 PM

View PostAnavrins, on 05 April 2014 - 07:10 PM, said:


View PostLua.is.the.best, on 05 April 2014 - 07:05 PM, said:

Spoiler
Have you seen the new rule, it's in almost every post of this page...
Refer to:

View PostBubba, on 15 November 2013 - 11:06 AM, said:

Okay guys. I've updated the latest challenge - currently, I have put Bit in the lead.

Also, an important change of rules: Challenges may now allow for other languages. Of course, this does not apply to challenges that are ComputerCraft specific or that the author does not allow for.


#109 Anavrins

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Posted 05 April 2014 - 07:40 PM

My reading skills are awful...

#110 AgentE382

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Posted 07 April 2014 - 01:31 AM

Pastebin submission:
H = http
E = textutils.urlEncode
O = fs.open
R = shell.resolve
x,y,z = ...

if x == "put" then
    print(H.post("http://pastebin.com/api/api_post.php", "api_option=paste&api_dev_key=c09548865c8dd0c2bf57d0d060b5e96a&api_paste_code=" .. E(O(R(y), "r").readAll())).readAll():match("[^/]+$"))
else
    w = H.get("http://pastebin.com/raw.php?i=" .. E(y)).readAll()
    if x == "run" then
        loadstring(w)(select(3, ...))
    else
        O(R(z), "w").write(w)
    end
end

392 chars

This duplicates the external interface of the original, without doing any error-checking or printing anything except the paste ID when successfully uploaded.

Oh, and you'll need to reboot to see the contents of any pastes you download. I think it has to do with not closing file handles and garbage collection cycles.

Edited by AgentE382, 07 April 2014 - 01:43 AM.


#111 Symmetryc

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Posted 07 April 2014 - 02:25 AM

Pastebin submission:
H = http
E = textutils.urlEncode
O = fs.open
R = shell.resolve
x,y,z = ...
p = "http://pastebin.com/"
r = "readAll"

if x == "put" then
print(H.post(p.."api/api_post.php", "api_option=paste&api_dev_key=c09548865c8dd0c2bf57d0d060b5e96a&api_paste_code=" .. E(O(R(y), "r")[r]()))[r]():match"[^/]+$")
else
w = H.get(p.."raw.php?i=" .. E(y))[r]()
if x == "run" then
loadstring(w)(({...})[3])
else
O(R(z), "w").write(w)
end
end
Characters: 373

Edit: Updated code, 389 -> 375
Edit2: 375 -> 373

Edited by Symmetryc, 07 April 2014 - 02:35 AM.


#112 Luca_S

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Posted 08 November 2015 - 07:55 PM

Don't see this as submission, coz most of the code is from Grim Reaper:

View PostGrim Reaper, on 16 August 2013 - 11:27 PM, said:

Here's my directory packer entry:

233 Characters without white space.
Spoiler

EDIT: The path to folder should be the first argument to the program.
s=...
t={}
function f (s, t)
  n = fs.getName (s)
  if fs.isDir (s) then
	    t[n] = {}
	    x	   = fs.list (s)
	    for i = 1, #x do
		  f (s .. '/' .. x[i], t[n])
	    end
  else
	    x = fs.open (s, 'r')
	    t[n] = x.readAll()
	    x.close()
  end
end
f (s, t)
z = fs.open (s.."_", 'w')
z.write (textutils.serialize (t))
z.close()


#113 H4X0RZ

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Posted 08 November 2015 - 08:24 PM

View PostLuca0208, on 08 November 2015 - 07:55 PM, said:

-snip-

(if your code works; haven't tested your code.)
s=...
t={}
d=fs
function f (s, t)
  n = d.getName (s)
  if d.isDir (s) then
		    t[n] = {}
		    x	  = d.list (s)
		    for i = 1, #x do
				  f (s .. '/' .. x[i], t[n])
		    end
  else
		    x = d.open (s, 'r')
		    t[n] = x.readAll()
		    x.close()
  end
end
f (s, t)
z = d.open (s.."_", 'w')
z.write (textutils.serialize (t))
z.close()
  • You can save 1 character when using a placeholder for fs :P
  • you don't need that function actually, forget that.

Edited by H4X0RZ, 08 November 2015 - 08:28 PM.


#114 Luca_S

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Posted 09 November 2015 - 02:05 PM

Nice, I haven't tested the code, only the
s=...
part, coz Grim's code is currently the leading I thought it has to work, I will test later.

#115 3d6

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Posted 04 January 2016 - 06:15 AM

Here's a sha-256 function in 2313 characters:
g=string.gsub S=loadstring(g(g(g(g(g(g(g(g(g(g('`R=32`a=2^R`b=a-1`&c(d)`mt={}`e=setmetatable({},mt)&mt:__index(f)`g=d(f)e[f][email protected]$@e$`&h(e,i)`&j(k,l)`m,o=0,1 while k~=0 and l~=0 do`p,q=k%i,l%i m=m+e[p][q]*o k=(k-p)/i l=(l-q)/i o=o*i$m=m+(k+l)*[email protected]$@j$`&r(e)`s=h(e,2^1)`t=c(&(k)@c(&(l)@s(k,l)$)$)@h(t,2^e.n or 1)$`u=r({[0]={[0]=0,[1]=1},[1]={[0]=1,[1]=0},n=4})`&v(k,l,w,...)`x=nil if l;k=k%a l=l%a x=u(k,l)if w;x=v(x,w,...)$@x elseif k;@k%a [email protected]$$`&y(k,l,w,...)`x if l;k=k%a l=l%a x=(k+l-u(k,l))/2 if w;x=bit32_band(x,w,...)$@x elseif k;@k%a [email protected]$$`&z(A)@(-1-A)%a$`&a9(k,C)if C<0;@Y(k,-C)$@math.floor(k%2^R/2^C)$`&D(A,C)if C>31 or C<-31;@0$@a9(A%a,C)$`&Y(k,C)if C<0;@D(k,-C)$@k*2^C%2^R$`&E(A,C)A=A%a C=C%R`a5=y(A,2^C-1)@D(A,C)+Y(a5,R-C)$`f={0x428a2f98?71374491?b5c0fbcf?e9b5dba5?3956c25b?59f111f1?923f82a4?ab1c5ed5?d807aa98?12835b01?243185be?550c7dc3?72be5d74?80deb1fe?9bdc06a7?c19bf174?e49b69c1?efbe4786?0fc19dc6?240ca1cc?2de92c6f?4a7484aa?5cb0a9dc?76f988da?983e5152?a831c66d?b00327c8?bf597fc7?c6e00bf3?d5a79147?06ca6351?14292967?27b70a85?2e1b2138?4d2c6dfc?53380d13?650a7354?766a0abb?81c2c92e?92722c85?a2bfe8a1?a81a664b?c24b8b70?c76c51a3?d192e819?d6990624?f40e3585?106aa070?19a4c116?1e376c08?2748774c?34b0bcb5?391c0cb3?4ed8aa4a?5b9cca4f?682e6ff3?748f82ee?78a5636f?84c87814?8cc70208?90befffa?a4506ceb?bef9a3f7?c67178f2}`&G(H)@Fgsub(H,".",&(w)@Fformat("%02x",Fbyte(w))$)$`&I(J,n)`H=""for K=1,n do`L=J%256 H=Fchar(L)..H J=(J-L)/256$@H$`&M(H,K)`n=0 for K=K,K+3 do n=n*256+Fbyte(H,K)$@n$`&N(O,P)`a6=64-(P+9)%64 P=I(8*P,8)O=O.."\128"..Frep("\0",a6)..P assert(#O%64==0)@O$`&a7(S)S[1B6a09e667 S[2Bbb67ae85 S[3B3c6ef372 S[4Ba54ff53a S[5B510e527f S[6B9b05688c S[7B1f83d9ab S[[email protected]$`&T(O,K,S)`U={}for V=1,16 do U[V]=M(O,K+(V-1)*4)$for V=17,64 do`g=U[V-15]`W=v(E(g,7),E(g,18),D(g,3))g=U[V-2]U[V]=U[V-16]+W+U[V-7]+v(E(g,17),E(g,19),D(g,10))$`k,l,w,X,Y,d,Z,_=S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[8]for K=1,64 do`W=v(E(k,2),E(k,13),E(k,22))`a0=v(y(k,l),y(k,w),y(l,w))`a1=W+a0`a2=v(E(Y,6),E(Y,11),E(Y,25))`a3=v(y(Y,d),y(z(Y),Z))`a4=_+a2+a3+f[K]+U[K]_,Z,d,Y,X,w,l,k=Z,d,Y,X+a4,w,l,k,a4+a1$S[1Q1]+k)S[2Q2]+l)S[3Q3]+w)S[4Q4]+X)S[5Q5]+Y)S[6Q6]+d)S[7Q7]+Z)S[8Q8]+_)$`&S(O)O=N(O,#O)`S=a7({})for K=1,#O,64 do T(O,K,S)$@G(I(S[1|2|3|4|5|6|7|8],4))$@S',"`"," local "),"%$"," end "),"&","function "),"@"," return "),";"," then "),"?",",0x"),"|","],4)..I(S["),"F","string."),"Q","]=y(S["),"B","]=0x"))()
I've been trying to get it as small as possible to put a checksum on a self-extracting archive. I bet someone here can do better :)





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