Module utils

Helper methods that often used in smart contracts.

Functions

assert_one_yocto

Assert that 1 yoctoNEAR was attached.

assert_self

Assert that predecessor_account_id == current_account_id, meaning contract called itself.

is_promise_success

Returns true if promise was successful. Fails if called outside a callback that received 1 promise result. Uses low-level crate::env::promise_results_count.

promise_result_as_success

Returns the result of the promise if successful. Otherwise returns None. Fails if called outside a callback that received 1 promise result. Uses low-level crate::env::promise_results_count and crate::env::promise_result.