Gas Optimizations

[code423n4]

dnssec-oracle/BytesUtils.sol

• L116/126 - An array.length variable could be generated in memory and used directly, this would generate a lower gas cost.

• L56/264/266 - It is not necessary to create a variable and set its default value of its type, you can save gas without setting it directly.

• L266/271/292/313 - Instead of i++ or i + 1 or i--, it is less expensive to do --i or ++i

dnssec-oracle/DNSSECImpl.sol

• L93/186/187 - You could generate a variable in memory of array.length and use that variable directly, this would generate a lower gas cost.

• L93 - It is not necessary to create a variable and set its default value of its type, you can save gas without setting it directly.

• L93 - Instead of i++ or i + 1 or i--, it is less expensive to do --i or ++i

dnssec-oracle/RRUtils.sol

• L39/40 - It is not necessary to create a variable if it will only be used once within the function.

• L50/181/200/310 - It is not necessary to create a variable and set its default value of its type, you can save gas without setting it directly.

• L24/54/235/241/250/260/271 - Instead of i++ or i + 1 or i--, it is less expensive to do --i or ++i

• L245 - Less gas is spent making variable != 0, than making variable > 0

• L94/307/310/315/316 - A variable could be generated in memory of array.length and use that variable directly, this would generate a lower gas cost.

ethregistrar/StringUtils.sol

• L12/14 - It is not necessary to create a variable and set its default value of its type, you can save gas without setting it directly.

• L14 - Instead of variable++, gas is saved by making ++variable.

registry/ReverseRegistrar.sol

• L41/52 - Instead of using a require, you can save gas using ifs with custom errors.

• L46/54 - When a string exceeds 32 bytes they generate a higher gas cost, try to generate messages with less than 32 characters.

wrapper/BytesUtil.sol

• L44 - Less gas is spent making variable != 0, than making variable > 0

• L28/45/49 - Instead of doing variable + 1 or variable - 1, you save gas by doing ++variable or --variable.

wrapper/ERC1155Fuse.sol

• L62/87/109/176/179/197/199/202/217/252/292/322/327/354/359 - When a string exceeds 32 bytes, they generate a higher gas cost, try to generate messages with less than 32 characters.

• L60/85/107/176/177/195/199/200/248/249/250/290 - gas could be saved if instead of using a modifier a private view function is used.

• L86/90/92/196/205 - array.length is used several times in the balanceOfBarch() and safeBatchTransferFrom() functions and between them in a for loop, gas could be saved if a length variable was created in memory, instead of querying the length each time.

• L92/205 - It is not necessary to create a variable and set its default value of its type, you can save gas without setting it directly.

• L92/205 - Gas can be saved by making the ++i unchecked.

wrapper/NameWrapper.sol

• L150/639/657 - gas could be saved if instead of using a modifier a private view function is used.

• L259/260/406/407/408/435/436/437/659/661 - It is not necessary to create a variable if it will only be used once within the function.

• L746/749/752 - You could generate a bytes(label).length variable in memory and use that variable directly, this would generate a lower gas cost.

wrapper/Controllable.sol

• L17 - When a string exceeds 32 bytes they generate a higher gas cost, try to generate messages with less than 32 characters.

• L16 - gas could be saved if instead of using a modifier a private view function is used.

• L17 - Instead of using a require, you can save gas using ifs with custom errors.

ethregistrar/ETHRegistrarController.sol

• L73/74/82/83/97/107 - It is not necessary to create a variable if it will only be used once within the function.

• L98 - Less gas is spent making variable != 0, than making variable > 0

• L101/139/198/234/240/242/261/265 - When a string exceeds 32 bytes they generate a higher gas cost, try to generate messages with less than 32 characters.

• L57/99/121/137/196/232/238/242/246/259 - Instead of using a require, you can save gas using ifs with custom errors.

• L256 - array.length is used in a for loop, gas could be saved if a length variable was created in memory, instead of length being consulted each time.

• L256 - It is not necessary to create a variable and set its default value of its type, you can save gas without setting it directly.

• L256 - Gas can be saved by making the ++i unchecked.