Re: [Challenge] Smallest table copy

["Thiago L." <fakedme@...>]

On 07/05/2014 15:08, Daniel Stephens wrote:
> Borrowing a trick from above, rearranging slightly, and some _G 
> trickery - down to 253
>
> local k,o,n,d=next,type,"table"d=function(a,r,t)if n~=o(a)then return 
> a end t={}r=r or{}r[a]=t for x,y in k,a do x=r[x]or d(x,r)y=r[y]or 
> d(y,r)t[x]=y end return t end _G[n].copy={shallow=function(a,b)b={}for 
> x,y in k,a do b[x]=y end return b end,deep=d}
#"table" = 5
#"_G[n]" = 5

Really? (I also think the former may be faster, and more readable)

Also 246:
local k,o,n,d=next,type,"table"d=function(a,r,t)if n~=o(a)then return a 
end t={}r=r or{}r[a]=t for x,y in k,a do t[r[x]or d(x,r)]=r[y]or 
d(y,r)end return t end table.copy={shallow=function(a,b)b={}for x,y in 
k,a do b[x]=y end return b end,deep=d}