A, Lua execution string
There is a problem during the run, I have a string, is a mathematical expression, how to calculate the value of this string expression?
For example, local param = "7*100", I need the result is actually 700, but how to calculate this value directly? The method is as follows
Prefix the string with a "return"
Then LoadString gets a function later.
Then perform a return value of 700, so that by converting, the results are as follows:
Second, the implementation of the LUA code as a string
Sometimes we want to be able to dynamically switch contexts in our code and change the process of processing the program, at which point we need to generate some code in accordance with our own will, at which point we need to execute some LUA code from the string
In our project I hope that I can get down from the server A can execute the LUA code, use this code to update the project resources, so as to avoid whether it is the first chicken or egg problem
Copy code code as follows:
--defining a string to use as function later
Funcstr = "Print (' Test ')"
--running it directly
LoadString (FUNCSTR) ()
--defining a function from the string and running it
Func = LoadString (FUNCSTR)