[Tutor] why list is not thread-safe, but deque and queue are thread-safe?
alan.gauld at btinternet.com
Wed May 2 19:02:29 CEST 2012
On 02/05/12 17:13, Lion Chen wrote:
> i have read it, as the "Answer" said, seems like deque is not
> thread-safe either, because deque has the operator +=, and others like
I'm no expert and have never used dequeue.
But I notice the documentation says:
"""Deques are a generalization of stacks and queues... Deques support
thread-safe, memory efficient appends and pops from either side of the
deque with approximately the same O(1) performance in either direction."""
So only append() and pop() are listed as being thread safe. If you use
any other operation I read that as being a risk.
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