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usgn = 14706 boo = usgn.."hahaha" print(string.sub(boo,1,5))
How can i make it to prints 14706 but also could make it prints usgns that has smaller than 5 digits like 1234, 123,12,1
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CS2D
Scripts Some string.sub questions
Some string.sub questions
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How can i make it to prints 14706 but also could make it prints usgns that has smaller than 5 digits like 1234, 123,12,1
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print(string.sub(boo, 1, #tostring(usgn)))
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string.sub(boo, 1, math.log(usgn,10)) -- the second parameter is automatically math.floor()ed
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string.sub(boo, 1, #tostring(usgn))
A little bit of runtime analysis
math.log runs in log time (the c version for natural log does is O(log n) so log base 10 is O(2*log n) = O(log n))
tostring(usgn) also runs in log time (in c, itoa is log n, which is intuitionistic)
and #list runs in O(n) time, so the over complexity of the second one is O(log^2 n) (where the n in #list is log n in this sense), which is larger asymptotically. Since lua numbers are bounded by 64 bytes, this doesn't really matter (C1*64 vs C2*64*64 is trivial)
edited 1×, last 04.04.11 08:45:52 pm
Unless, of course, he wants to do this conversion 10000 times per second, but I suppose that isn't the purpose.
But... since when does math.log take a second parameter?
http://www.lua.org/manual/5.1/manual.html#pdf-math.log
so either math.log10(n) or math.log(n)/math.log(10)
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addhook("say","on_say")
function on_say(p,txt)
local usgn = player(p,"usgn")
if txt=="!usgn" then
msg2(p,"©255255000My USGN ID is "..usgn)
elseif usgn==0 then -- If it's a guest player with no USGN ID it will not be displayed.
return 1
end
end
Simply type !usgn in chat and it'll display in yellow text.
edited 1×, last 04.04.11 10:35:06 pm
And Kimkat I already know how to do that but thank you anyways
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