Trait concordium_std::HasContractState [−][src]
A type that can serve as the contract state type.
Associated Types
Loading content...Required methods
fn open(_: Self::ContractStateData) -> Self
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Open the contract state. Only one instance can be opened at the same time.
fn size(&self) -> u32
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Get the current size of contract state.
fn truncate(&mut self, new_size: u32)
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Truncate the state to the given size. If the given size is more than the current state size this operation does nothing. The new position is at most at the end of the stream.
fn reserve(&mut self, len: u32) -> bool
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Make sure that the memory size is at least that many bytes in size. Returns true iff this was successful. The new bytes are initialized as 0.