Re: Lua Tutor? Porting Python code to Lua.
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- Subject: Re: Lua Tutor? Porting Python code to Lua.
- From: Peter Shook <pshook@...>
- Date: 2002年9月23日 21:21:07 -0400
On Saturday 21 September 2002 21:02, Dean wrote:
> How would you have written this in Lua?
local write = io.write
function drawRow(row)
for i = 1, table.getn(row) do
write( row[i] and 'O' or '.' )
end
write'\n'
end
local push = table.insert
function applyRuleOnRow(rule, row)
local new_row = { false }
for i = 2, table.getn(row)-1 do
local think_binary = 1 + (row[i-1] and 4 or 0)
+ (row[i] and 2 or 0)
+ (row[i+1] and 1 or 0)
push(new_row, rule[think_binary])
end
push(new_row, false)
return new_row
end
local RULE_100 = { false, true, true, true, false, true, true, false }
local STARTING_ROW = { n=75, [73]=true }
if arg then
local row = STARTING_ROW
for i = 1, 70 do
drawRow(row)
row = applyRuleOnRow(RULE_100, row)
end
end
don't need tuples after all. ;-)
- Peter