Computing string sums? Ie "40+2"

Questions
1

Can we compute string sums like “1/2” or “40+2” etc directly without a more elaborate string interpreter function?

I tried print( tonumber("1/2 ") ) but that failed as expected…

2

@Kirl There is a function called load, which loads a function in the form of a string.
Example:

function setup()
    local str="40+3*4/4" --should print out 43
    local val=load("return "..str)()
    print(val)
end
3

Excellent, thanks a lot cc! =)

4

@CamelCoder wasn’t it called loadstring?

a = loadstring("return 63 / 2")()
print(a)

Was the name of the function changed? Or am I just wrong?

Edit: I tried both load and loadstring. They both seem to work the same… Can someone please explain to me why. Thanks :smile:

5

Both ways work, so either one can be used in this case.

6

@Kolosso As @dave1707 said, both work. I used to use loadstring(), but then I realized that it would be simpler to use load() because it is actually in the auto-complete.

7

@dave1707 @CamelCoder thanks! :smile: