Save a 2422 Units of gas by marking constructors payable
Summary
Marking constructors as payable is one of the great ways to optimize contract deployments.
According to a post by pcaversaccio on Openzeppelin Forum
Thanks to his approach, I have tried it and we saved a bunch of sweet deployment gas.
Impact
Here are the results that I've obtained from the Foundry gas snapshot:
Escrow Factory Contract
Before adding payable constructor
test_EscrowFactoryDeploymentGas() (gas: 1752574)
After Adding Payable Constructor
test_EscrowFactoryDeploymentGas() (gas: 1752552)
1752574 - 1752552 = 22 units of gas
ESCROW contract
Before adding payable to the constructor :
| Deployment Cost | Deployment Size |
|---|---|
| 1863762 | 9139 |
| Function Name | min | avg | median | max | # calls |
|---|---|---|---|---|---|
| run | 1757938 | 1757938 | 1757938 | 1757938 | 1 |
After adding payable // :
| Deployment Cost | Deployment Size |
|---|---|
| 1861362 | 9127 |
| Function Name | min | avg | median | max | # calls |
|---|---|---|---|---|---|
| run | 1755538 | 1755538 | 1755538 | 1755538 | 1 |
We can see a sweet difference of 1757938-1755538 = 2400 gas units.
that is huge when the Ethereum Mainnet is in demand.
Total Impact 2400+22 = 2422 Units of gas 👀🥳
Tools Used
Foundry, Manual review, pcaversaccio's post
Recommendations
Add payable to the constructor of the Escrow contract.
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