CODEWITHSUNDEEP
lua
Liu Hao
Liu Hao

Reputation: 512

how to resume a coroutine in lua?

I was try to use coroutine in lua, I tried the code below, repl.it here https://repl.it/repls/WordyWonderfulVisitor and it does not print the list content in the loop.

local list = {1,2,3};

local function iter()
  for i, v in ipairs(list) do
    print(i, v)
    coroutine.yield();
  end
end

local co = coroutine.create(iter);
coroutine.resume(co);
coroutine.resume(co);
-- iter();

what's wrong with my code ?

Upvotes: 1

Views: 783

Answers (1)

Paul Kulchenko
Paul Kulchenko

Reputation: 26754

There is nothing wrong with your code. It prints 1 1 and 2 2 as expected and the results are the same in Lua 5.1-5.4 versions.

If you want to see one more result 3 3, then you need to call resume one more time. You can also check the status of the coroutine by using coroutine.status, so after the first two executions you'll get "suspended" and after the execution is completed you'll get "dead".

Upvotes: 2

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