Ethereum contract trading tips

Ethereum contract trading tips include: Optimize Gas costs: reduce loops, avoid unnecessary assignments, choose appropriate variable types, use the Memory keyword to handle exceptions: use Require, customize error events, and handle error security considerations in recovery functions : Check incoming data, use oracles, limit contract functions Performance optimization: use events instead of returns, optimize data structures, parallelize processing Practical development skills: use libraries, use debugging tools, regularly review contract code

Ethereum Contract Trading Tips

1. Optimize Gas Cost

• Reduce Loops: Using for loops may consume a lot of Gas, try using other methods such as mapping or arrays.
• Avoid unnecessary assignments: Gas is consumed every time a variable is reassigned, so try to reduce unnecessary allocations.
• Choose the appropriate variable type: use the smallest data type in Solidity, such as uint8 instead of uint256.
• Use Memory keyword: Storing variables in Memory is cheaper than Storage, but make sure you free it before the function ends.

2. Exception handling

• Use Require: throw an error when the condition is not met, which saves gas than revert().
• Custom Error Events: Create custom error events to provide more information about failed transactions.
• Handle errors in the recovery function: Use the fallback() or receive() function to handle exceptions in the contract.

3. Security considerations

• Check incoming data: Verify input parameters of function calls to prevent malicious attacks.
• Use oracles: Obtain information from external data sources to enhance the security and credibility of the contract.
• Restrict contract functions: only grant users the basic permissions required by the contract to reduce security risks.

4. Performance optimization

• Use events instead of returns: Use events to notify the caller of changes in contract status instead of returning results.
• Optimized data structures: Use efficient data structures such as maps or arrays to find and retrieve data quickly.
• Parallelization: If possible, split transactions into tasks executed in parallel to increase overall throughput.

5. Practical Development Tips

• Use Libraries: Import pre-built libraries to extend the functionality of your contract, such as security, math, or data structures.
• Use debugging tools: Use tools such as Remix or Truffle to debug and troubleshoot contracts.
• Regular review of contract code: Regularly check the code for correctness and security, especially when updating or adding new features.

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