5aed8b3ef5
Functions must be annotated as `stateful` in order to - Update the contract state (using `put`) - Call `Chain.spend` or other primitive functions that cost tokens - Call an Oracle or AENS function that requires a signature - Make a remote call with a non-zero value - Construct a lambda calling a stateful function It does not need to be stateful to - Read the contract state - Call another contract with value=0, even when the remote function is stateful
27 lines
607 B
Plaintext
27 lines
607 B
Plaintext
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contract SpendContract =
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function withdraw : (int) => int
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contract SpendTest =
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stateful function spend(to, amount) =
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let total = Contract.balance
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Chain.spend(to, amount)
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total - amount
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stateful function withdraw(amount) : int =
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spend(Call.caller, amount)
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stateful function withdraw_from(account, amount) =
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account.withdraw(amount)
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withdraw(amount)
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stateful function spend_from(from, to, amount) =
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from.withdraw(amount)
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Chain.spend(to, amount)
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Chain.balance(to)
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function get_balance() = Contract.balance
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function get_balance_of(a) = Chain.balance(a)
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