Gas cost before optimization (unstake after 10 blocks)
·---------------------------|----------------------------|-------------|-----------------------------·
| Solc version: 0.8.9 · Optimizer enabled: false · Runs: 200 · Block limit: 30000000 gas │
····························|····························|·············|······························
| Methods · 17 gwei/gas · 1687.91 usd/eth │
···············|············|··············|·············|·············|···············|··············
| Contract · Method · Min · Max · Avg · # calls · usd (avg) │
···············|············|··············|·············|·············|···············|··············
| FruitStand · stake · - · - · 110439 · 1 · 3.17 │
···············|············|··············|·············|·············|···············|··············
| FruitStand · unstake · - · - · 170780 · 1 · 4.90 │
···············|············|··············|·············|·············|···············|··············
| MELON · transfer · - · - · 52345 · 1 · 1.50 │
···············|············|··············|·············|·············|···············|··············
| WATER · approve · - · - · 46846 · 1 · 1.34 │
···············|············|··············|·············|·············|···············|··············
| Deployments · · % of limit · │
····························|··············|·············|·············|···············|··············
| FruitStand · - · - · 677119 · 2.3 % · 19.43 │
····························|··············|·············|·············|···············|··············
| MELON · - · - · 1176368 · 3.9 % · 33.76 │
····························|··············|·············|·············|···············|··············
| WATER · - · - · 1176356 · 3.9 % · 33.75 │
·---------------------------|--------------|-------------|-------------|---------------|-------------·
Do the following changes
- Use immutable to store the contract addresses of Water and Melon .
- Use loop instead of recursive to calculate fibonacci series.
- change fib() to private.
- Pre calculate fibonacci series when deployment.
- Delete unused mapping item after unstake.
- Reduce storage access in unstake().
Gas cost after optimization (unstake after 10 blocks)
·---------------------------|----------------------------|-------------|-----------------------------·
| Solc version: 0.8.9 · Optimizer enabled: false · Runs: 200 · Block limit: 30000000 gas │
····························|····························|·············|······························
| Methods · 10 gwei/gas · 1669.55 usd/eth │
···············|············|··············|·············|·············|···············|··············
| Contract · Method · Min · Max · Avg · # calls · usd (avg) │
···············|············|··············|·············|·············|···············|··············
| FruitStand · stake · - · - · 108306 · 1 · 1.81 │
···············|············|··············|·············|·············|···············|··············
| FruitStand · unstake · - · - · 54709 · 1 · 0.91 │
···············|············|··············|·············|·············|···············|··············
| MELON · transfer · - · - · 52357 · 1 · 0.87 │
···············|············|··············|·············|·············|···············|··············
| WATER · approve · - · - · 46846 · 1 · 0.78 │
···············|············|··············|·············|·············|···············|··············
| Deployments · · % of limit · │
····························|··············|·············|·············|···············|··············
| FruitStand · - · - · 7319445 · 24.4 % · 122.20 │
····························|··············|·············|·············|···············|··············
| MELON · - · - · 1176368 · 3.9 % · 19.64 │
····························|··············|·············|·············|···············|··············
| WATER · - · - · 1176356 · 3.9 % · 19.64 │
·---------------------------|--------------|-------------|-------------|---------------|-------------·
I finished all the required tasks include the additional tasks. Meet all the requirements with the given interface.
I achieved a high test coverage. Please see the statistic below.
Test Coverage
-----------------|----------|----------|----------|----------|----------------|
File | % Stmts | % Branch | % Funcs | % Lines |Uncovered Lines |
-----------------|----------|----------|----------|----------|----------------|
contracts/ | 100 | 97.44 | 100 | 100 | |
ChequeBank.sol | 100 | 97.44 | 100 | 100 | |
-----------------|----------|----------|----------|----------|----------------|
All files | 100 | 97.44 | 100 | 100 | |
-----------------|----------|----------|----------|----------|----------------|
