CS 3060: Programming Languages

Lua

Robert C. Green II, Ph.D.

Day 3

Coroutines

• Lightweight pseduo-thread
• Runs only on a single core
• Asymmetric

Coroutines

                        
myVar = coroutine.create(myFunction)
succeeded, value = coroutine.resume(myFunction)

print(coroutine.status(myVar))
                        
                    

                        
myVar = coroutine.wrap(myFunction)

print(coroutine.status(myVar))
                        
                    

Coroutines

Coroutines

• Suspended
• Running
• Dead

Coroutines

• Extra arguments to resume are passed into function called
• Resume returns anything passed to yield
• Yield returns

Assignment

Continue the Assignment

Read Day 2

Resources

• http://www.lua.org