Re: Thoughts on new syntax for toclose
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- Subject: Re: Thoughts on new syntax for toclose
- From: Sean Conner <sean@...>
- Date: 2019年5月21日 23:08:52 -0400
It was thus said that the Great Dibyendu Majumdar once stated:
> The latest commits show the syntax <toclose> being adopted instead of *toclose.
There's also <const> as well. But you can't combine them:
do
local <toclose> f = io.open(foo) -- okay
local <const> x = 5 -- okay
local <toclose> <const> g = io.open(bar) -- error
local <const> <toclose> h = io.open(baz) -- also error
end
> Aesthetically I find the new syntax to be nicer, but this still has
> the problem that the previous syntax had; which is that the symbol '<'
> has meaning in expressions therefore using this symbol (like the *
> symbol) may restrict the ability to use extensions inside expressions.
> Of course extensions will always be restricted to local declarations
> in which case it doesn't matter.
do
local *toclose f = io.open(foo)
local *const x = 5
end
do
local @toclose f = io.open(foo)
local @const x = 5
end
Eh. I tend to prefer the '@' syntax, but only because '@' has no current
use in Lua. But I can live with this.
But the latest manual for Lua 5.4 still mentions the old syntax.
-spc