erase old version abi before insert new version abi when set abi #70
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…t insert new element when there's same key already in it
heifner
reviewed
Sep 15, 2020
heifner
reviewed
Sep 15, 2020
| context->contracts.insert({name{contract}, std::move(c)}); | ||
| const name key {contract}; | ||
| context->contracts.erase(key); | ||
| context->contracts.insert({key, std::move(c)}); |
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Should be able to use: context->contracts.insert_or_assign(name{contract}, std::move(c));
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Yes, insert_or_assign is better.
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Because element keys in a map are unique, the insertion operation checks whether each inserted element has a key equivalent to the one of an element already in the container, and if so, the element is not inserted. So when we set a contract of new version, we must erase old version first. Otherwise the new contract is not inserted, and the old contract is still in context.