lua run string as code

To run a Lua string as code, you can use the load function. The load function takes a string as an argument and returns a function that can be executed to run the Lua code contained in the string. Here are the steps to run a Lua string as code:

  1. Create a Lua string that contains the code you want to run. For example, let's say you have the following Lua code in a string:
local x = 5
local y = 10
local z = x + y
print(z)
  1. Use the load function to create a function from the Lua string. The load function takes the Lua string as an argument and returns a function. For example:
local codeString = [[
local x = 5
local y = 10
local z = x + y
print(z)
]]

local codeFunction = load(codeString)
  1. Execute the code by calling the function returned by load. For example:
codeFunction()

When you call the function returned by load, Lua will execute the code contained in the string. In this example, the code creates three local variables x, y, and z, assigns them values, performs addition, and then prints the value of z.

The output of running this code would be:

15

This is because the value of x is 5, the value of y is 10, and the value of z is the sum of x and y, which is 15. The print function is used to display the value of z on the console.

Keep in mind that running arbitrary Lua code strings can be a security risk, so make sure to validate and sanitize any user input before executing it as code.