Gas Limit Exceeded in Complex Transactions

Description:
When smart contracts perform complex transactions, gas limit errors may occur, causing the contract to fail. This usually happens in large loops or multiple nested functions.

Cause:

1. Complex operations or unoptimized code leading to excessive gas consumption.
2. Large arrays or mappings causing inefficient gas usage.
3. Unoptimized logic in contract functions that requires more computation.

Solution:

function sum(uint[] memory nums) public pure returns (uint) {
    uint total = 0;
    for (uint i = 0; i < nums.length; i++) {
        total += nums[i];
    }
    return total;
}

Solidity development enables secure, transparent, and decentralized applications on the Ethereum blockchain. It reduces reliance on intermediaries, automates processes with smart contracts, and fosters innovation in sectors like finance, gaming, and supply chain management.