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Guidelines for named return values #5178

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Sep 3, 2024
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Guidelines for named return values #5178

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7 changes: 7 additions & 0 deletions GUIDELINES.md
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Expand Up @@ -131,6 +131,13 @@ In addition to the official Solidity Style Guide we have a number of other conve
abstract contract AccessControl is ..., {
```

* Return values are generally not named, unless they are not immediately clear or there are multiple return values.

```solidity
function expiration() public view returns (uint256) { // Good
function hasRole() public view returns (bool isMember, uint32 currentDelay) { // Good
```

* Unchecked arithmetic blocks should contain comments explaining why overflow is guaranteed not to happen. If the reason is immediately apparent from the line above the unchecked block, the comment may be omitted.

* Custom errors should be declared following the [EIP-6093](https://eips.ethereum.org/EIPS/eip-6093) rationale whenever reasonable. Also, consider the following:
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