Re: assignments in expressions?

[Will Leshner <will@...>]

I agree. I think all statements should return values. That is a very powerful feature I'd like to see in Lua. Scheme, for example, has such a concept.


On Thursday, January 11, 2001, at 12:41 PM, Lenny Palozzi wrote:

> In the code below I would like to assign 'c' the return value of function 
> 'f', and have c(or the return value of function 'f') compared to the 
> right-hand side. From the looks of the Lua syntax, you can't do this in Lua. 
>  
> I get: 
>  
> error: `)' expected; 
>   last token read: `=' at line 6 in file `t2.lua' 
>  
> Can Lua be easily changed to handle this? Just curious, as I sometimes write 
> similar code in C. 
>  
> function f() 
>   return 1 
> end 
>  
> c=0 
> while (c=f()) == 1 do 
>   print(c) 
> end 
>  
> Thanks, 
> -Lenny 
>  
>