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The functioncall is written as some.function.name(a,b,c) where some.function.name means something in the Extension:Scribunto/Lua reference manual and a,b,c are the arbitrary variable names you've chosen.
Marshalling data between C and Lua functions is also done using the stack. To call a Lua function, arguments are pushed onto the stack, and then the lua_call is used to call the actual function. When writing a C function to be directly called from Lua, the arguments are read from the stack. Here is an example of calling a Lua function from C:
LuaJIT, a just-in-time implementation of Lua, has an FFI that allows "calling external C functions and using C data structures from pure Lua code". [4] [5]: 35 Nim has an FFI which enables it to use source from C, C++, and Objective-C. It can also interface with JavaScript.
This text calls the Lua script itself, which is housed in the Module: namespace. The effect of this call is to send the information within the #invoke block to the Lua module, and to replace everything within the brackets with a piece of text that it sends back in return. (Literally, in the "return" statement)
Vim has Lua scripting support starting with version 7.3. [33] VLC media player uses Lua to provide scripting support. Warframe uses Lua for HUD purposes and several other UI operations; Waze uses Lua internally. waze-4-35-0-15.apk includes Lua 5.3.3. WeeChat IRC client allows scripts to be written in Lua.
C++ also allows objects to provide an implementation of the function call operation. The Standard Template Library accepts these objects (called functors) as parameters. Many dynamic languages, such as JavaScript, Lua, Python, Perl [1] [2] and PHP, allow a function object to be passed.
Many software libraries are written in system programming languages such as C or C++. To use such libraries from another language, usually of higher-level , such as Java , Common Lisp , Scheme , Python , or Lua , a binding to the library must be created in that language, possibly requiring recompiling the language's code, depending on the ...
[g] (It's possible to make tables that work like this in a Lua program, using things called metatables. That, too, is outwith the scope of this Guide.) An unfortunate side-effect of this is that some of the normal Lua table operators don't work on an args table. The length operator, #, will not work, and neither will the functions in Lua's ...