Re: Influence of Lua on Go?
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- Subject: Re: Influence of Lua on Go?
- From: steve donovan <steve.j.donovan@...>
- Date: 2011年9月11日 12:59:27 +0200
On Sun, Sep 11, 2011 at 5:40 AM, Daniel Aquino
<mr.danielaquino@gmail.com> wrote:
> With pcall couldn't you implement the defer functions in Go ?
> This is pseudo code somewhere between Javascript and Lua...
Have a look at how it's done in LuaSocket:
http://w3.impa.br/~diego/software/luasocket/socket.html
look for the example under socket.newtry.
foo = socket.protect(function()
-- connect somewhere
local c = socket.try(socket.connect("somewhere", 42))
-- create a try function that closes 'c' on error
local try = socket.newtry(function() c:close() end)
-- do everything reassured c will be closed
try(c:send("hello there?\r\n"))
local answer = try(c:receive())
...
try(c:send("good bye\r\n"))
c:close()
end)
steve d.