If two transactions contradict each other, the one that ends up being second will be rejected and not become part of the block ?While a contract is being created, its code is still empty. Because of that, you should not call back into the contract under construction until its constructor has finished executing.?why we want to use memeory keyword in declaring of string inside the function?for every reference types need to write memory whenever they are returning ?- bytes is more efficient than arrays when the size is not fixed?
- bytes4 public cl ="asvd", bytes stores only raw data but this code works fine how?
- Immutability vs Constant
Why Don't Solidity Functions Return Values on the Blockchain Unless They're view or pure?- Q&A: Calling One Contract from Another Without Interface or Low-Level Calls