Question

I’m trying to pick up Lua programming but I’m stuck on something that’s probably trivial. I’m prototyping some Lua scripts using Kahlua from IntelliJ Idea 11 and I keep getting errors whenever I try to use io.read(). Here’s what I currently have:

require "io"

print("input:")
a = io.read()        -- read a number
print(a)

When I run it in Idea I get “Tried to call nil
at interpreter:1” If I remove the require and the blank line after it I get “input:
attempted index of non-table: null
at interpreter:2” What am I doing wrong?

Answer 1

Kahula doesn’t support the io library.

Your best bet would be to set up a real Lua SDK, and use the run lua console feature.

See: http://www.screencast.com/t/0f262SeCKmqT