Re: Next Version of Lua? (continue)

[Richard Hundt <richardhundt@...>]

Roberto Ierusalimschy wrote:
> > Every person I train in Lua asks me why 'continue' doesn't work.  I show  
> > them the "equivalent", and it never meets with any kind of satisfaction.
> >
> > [...]
> >
> > I'm in the camp where I see a real need for it in Lua, not only for  
> > clarity, but because it is a very useful loop construct that anyone  
> > coming from another popular (scripting) language will expect to be able  
> > to use.
>
> Any comment about this?
>
>   http://lua-users.org/lists/lua-l/2005-09/msg00548.html
>
> -- Roberto

My expectations are that the difference between the `repeat' and `while' 
loop constructs should simply be that `repeat' evaluates is block before 
testing the condition, whereas `while' does the inverse. I find it 
surprising that the variable in the `until' condition is inside the 
scope of the loop block.

So my vote would be to add `continue', but hoist the scope of the 
`until' condition outside the block to make it behave like `while'.

My tuppence.

-R