Re: syntax heresy
[
Date Prev][
Date Next][
Thread Prev][
Thread Next]
[
Date Index]
[
Thread Index]
- Subject: Re: syntax heresy
- From: Boyko Bantchev <boykobb@...>
- Date: Tue, 9 Aug 2005 09:14:30 +0300
On 8/9/05, Alain <alainm@pobox.com> wrote:
> You certainly acheived one thing: It has been a long time since I look a
> factorial function and cannot in any way understand it ;-)
Is the _only_ reason that you `cannot understand'
the factorial function (coming with the Lua interpreter)
that I have written some tokens in it in a new way?
Then you will have no difficulties in guessing what the
following Lua program does -- after all, it has a truly
orthodox syntax. Well, if you cannot, within an hour
or two, tell what it is, just run it :)
function f1()
return coroutine.wrap(
function()
local x = 0
while true do
x = x+1
coroutine.yield(x)
end
end
)
end
function f2(f)
return coroutine.wrap(
function()
local x = 0
while true do
x = x+f()
coroutine.yield(x)
end
end
)
end
function f3(f)
return coroutine.wrap(
function()
local g,h = f1(),f2(f1())
local x z = h()
while true do
local y = g()
if y==z
then z = h()
else coroutine.yield(x)
end
x = f()
end
end
)
end
n = 10^10
f = f1()
while true do
local x = f()
if x>n then break end
print(x)
f = f2(f3(f))
end