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- Subject: Re: list iteration for statement
- From: "John Belmonte" <jvb@...>
- Date: Thu, 26 Apr 2001 19:07:27 +0900
Philippe Lhoste wrote:
> Sorry if I don't answer correctly to your request, but I believe Lua
> have a mechanism for this.
> foreach (table, func)
> foreachi (table, func)
Sorry, I should have addressed these library functions in my post. Well, if
foreach() is so great, why do we have a special for construct to do the same
thing? Remember that the for command was created after these functions
already existed. I'll bet that since for loops were introduced as a way to
iterate tables, most of us don't use foreach() anymore. Having to create
function objects can sometimes make code hard to follow. So since there is
a form of for matching foreach(), why not foreachi() too?
For comparison, here is my example again using foreachi. It's not bad in
the case of a one-statement function, but for larger functions it becomes
less readable that using a for construct.
foreachi(list, function(i, val) print(val) end)