What is an example of using STM in Haskell?
An example of an AI chatbot conversation about Haskell's Software Transactional Memory (STM).
Can you explain what STM is in Haskell?
Sure! STM stands for Software Transactional Memory, a concurrency control mechanism in Haskell that allows safe access to shared memory.
How does STM help with concurrent programming?
STM simplifies concurrent programming by allowing you to compose memory transactions that can be retried if they conflict, avoiding deadlocks.
Can you give me a simple code example using STM?
Absolutely! Here's a basic example:
import Control.Concurrent.STM
counter :: TVar Int
counter = newTVarIO 0
increment :: STM ()
increment = do
value <- readTVar counter
writeTVar counter (value + 1)
What are the advantages of using STM over traditional locking?
The main advantages include easier reasoning about code, reduced risk of deadlocks, and better composability of operations.
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