Value concatenation

Value concatenation allow to convert the C Value to a string then concatenates it with another string or C Value.
The result of the concatenation is a string.

Example


--! luart-extensions
import c

-- load advapi32.dll library
local kernel32 = c.Library("kernel32.dll")

-- declare a prototype for GetCurrentDirectoryA() C function
kernel32.GetCurrentDirectoryA = "(IZ)I"

-- creates a C string of 255 characters length
local dir = c.string(255)


-- Get the current user name
if kernel32.GetCurrentDirectoryA(255, dir) then
    -- concatenate the dir Value with a string
    print("Current user name is "..dir)
else
    error("Error while getting user name : "..sys.error)
end