Code for staking rewards contract.
0:00 - State variables and constructor
4:02 - Functions overview
6:01 - setRewardsDuration
7:40 - notifyRewardAmount
11:15 - stake
13:02 - earned
14:58 - rewardPerToken
16:42 - lastTimeRewardApplicable
18:30 - updateRewards
21:02 - Attach modifier updateRewards
21:50 - getReward
23:10 - Fix code
23:36 - Demo on Remix
Code
https://solidity-by-example.org/defi/staking-rewards
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