Re: Why I leave Lua (Was: Re: [ANN] Lua 5.3.0 (work3) now available)

["Thiago L." <fakedme@...>]

On 10/07/14 02:35 PM, Roberto Waltman wrote:
> On 07/10/2014 07:04, GrayFace wrote:
> > Lua desperately needs a form of optional static typing, not those 
> > gotos with ugly syntax.
>
> Since I used Lua for the first time, (~ 7 years ago,) my "would be 
> nice if" list includes a "freezeType(val)" function that would 
> constrain future assignments to val to its current type. Of course, if 
> the type is table, that is a very weak limitation.
>
> [ What about a freezeValue() ? ]
whatever[key]=value
setmetatable(whatever,{__index={[key]=value},__newindex=function(t,k,v) 
if getmetatable(t).__index[k] then error() end rawset(t,k,v) end})
whatever[key] = nil