Re: what's wrong with this loop syntax?

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• Subject: Re: what's wrong with this loop syntax?
• From: "Michael Newberry" <mnewberry@...>
• Date: Mon, 8 Jan 2007 14:09:58 -0700

---

Rafael,

Your code doesn't work either. But the following code works, although more clumsy than what I first tried:

 while true do
 str = S:Next()
 if str == nil then break end
 -- stuff
 end

So do you have any idea why I cannot use the more compact syntax that I first trieed?

Michael

----- Original Message ----- From: "Rafael de Menezes" <soscpd@terra.com.br>

To: "Lua list" <lua@bazar2.conectiva.com.br>
Sent: Monday, January 08, 2007 1:47 PM
Subject: Re: what's wrong with this loop syntax?

Just while (str) do
if str = S:Next() then
end
end

doesnt work? Its not the beeest est code, but i dont have more sources.... ----- Original Message ----- From: "Michael Newberry" <mnewberry@mirametrics.com>

To: "Lua list" <lua@bazar2.conectiva.com.br>
Sent: Monday, January 08, 2007 6:33 PM
Subject: what's wrong with this loop syntax?

Pardon me for asking a simple question, but why can't I use this syntax?
 while (str = S:Next()) ~= nil do
or this syntax:
 while (str = S:Next()) and str ~= nil do
where S exists and S:Next() returns a string or nil.
I get this message: `)' expected near `='
Thanks,
Michael

---

• Follow-Ups:
  • Re: what's wrong with this loop syntax?, Luiz Henrique de Figueiredo

• References:
  • userdata as table keys, Erik Cassel
  • what's wrong with this loop syntax?, Michael Newberry
  • Re: what's wrong with this loop syntax?, Rafael de Menezes

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