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Is there a problem doing it this way: ?local function func1() print("local func1") endlocal function func2() print("local func2") endlocal fn = { "func1", "func2" }for i = 1, 3 dolocal func_name = fn[i]pcall(_ENV[func_name])endOn Mon, Jun 8, 2015 at 12:49 PM, Brigham Toskin <brighamtoskin@gmail.com> wrote:If it makes sense, you may be able to cache these as locals and/or upvalues in some cases for a speed bump. You'll have to decide if it fits your project architecture though, i.e. used several times after lookup, rather than completely dynamical at each call site.--On Mon, Jun 8, 2015 at 12:25 PM, Dmitry Zaitsev <hhrhhr@gmail.com> wrote:Thanks to all. Indeed, the search for local names was rather slow in the case of frequent use, so I will use the table of functions from the first example.2015-06-08 22:18 GMT+03:00 Brigham Toskin <brighamtoskin@gmail.com>:Oh, reflection. Yeah, forgot about that. Still, probably a bad idea to do this in a loop or frequently-called code, unless you're sure it won't bottleneck your code.--On Mon, Jun 8, 2015 at 12:13 PM, Paul K <paul@zerobrane.com> wrote:> it is work, but I'm interested in the ability to call a local function:
You can iterate over local variables to find the one with the name you need:
local function func1() print("local func1") end
local function func2() print("local func2") end
local fn = { "func1", "func2", "func3" }
local function name2value(target)
for i = 1, math.huge do
local name, value = debug.getlocal(2, i)
if not name then return end
if name == target then return value end
end
end
for i = 1, 3 do
local func_name = fn[i]
pcall(name2value(func_name) or error("can't find local "..func_name))
end
Paul.
On Mon, Jun 8, 2015 at 11:56 AM, Dmitry V. Zaitsev <hhrhhr@gmail.com> wrote:
> example with table of functions:
>
> local T = {}
> function T.func1() print("func1") end
> function T.func2() print("func2") end
>
> local fn = { "func1", "func2", "func3" }
>
> for i = 1, 3 do
> local func_name = fn[i]
> pcall(T[func_name])
> end
>
> it is work, but I'm interested in the ability to call a local function:
>
> local function func1() print("local func1") end
> local function func2() print("local func2") end
>
> local fn = { "func1", "func2", "func3" }
>
> for i = 1, 3 do
> local func_name = fn[i]
> pcall(func_name) -- ???
> end
>
> of course, I get an error "attempt to call a string value".
Brigham ToskinBrigham Toskin