Basic actor model docs #24
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Co-authored-by: Tomasz Kurcz <360248+uint@users.noreply.github.com>
| means a contract can only interact with the outside world via messages and only | ||
| manipulate its own state. | ||
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| Picture two people living in two houses, each house has a mailbox. If person A |
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Been a while since I've used snail mail, but, I believe I would put the letter in my own mailbox, then the postal service picks it up to put it in the other person's.
Kinda a nit, since the point is more about addresses and messages than delivery - but when adding messages in contracts, we don't actually add the message directly to the other contract either - we add it to our Response object, and then it's picked up and delivered to the destination, so I think it would fit better overall to describe it this way.
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Dang, okay, I hit the merge button a little too quickly. Yeah, good point, I'll have a look over the wording again and make a separate PR for that.
| But how does that fix reentrancy? In CosmWasm, you can only send out messages at | ||
| the end of a contract execution as part of the response. This ensures you have | ||
| already written everything to the state, meaning your state is in a consistent | ||
| state. |
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"meaning your state is in a consistent state" is clever, but, could be confusing... maybe something like "meaning your state cannot be changed under your feet mid-execution", or something like that, e.g. explicitly point out the problem it's solving?
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