Ethereum Smart Contract Programming

[Bhujanga]

@thecil, Ok, I tried it and the problem is, that solidity is not capable of returning dynamic arrays from functions.
Read here

[SmartboyML_AI]

Is there a Systems Architecture diagram we can view for Smart Contracts(Solidity), and how it all integrates in to the Ethereum Blockchain Architecture?

[Phaxsam]

hey @Filip…I’ve started working on my project to practice my learning…so right now I’m working on lending protocol but for real I don’t know how and what to even start with…lol…seriously I’m confused on thinking on what I need to have in my contract , struct and many others like that…I want to ask from @everyone can I get a sketch of kind of what’s needed in such a lending protocol…a p2p lending protocols…ethlend did something of such then…but for lending protocol as a whole…

[Taishi_Nammoto]

@firepol

he course is for noobs, so showing how to debug properly is essential. I searched in youtube and found various videos about debugging with remix, but they are not very well made. Do you cover more in depth the debugger later in the course? I’m at the lecture “Owner modifier” and I think the debugger should have been definitively shown a bit earlier in the course, as you invite your students to try to debug

I have the same question here. The lecture on Ethereum 201 starts with a debugger which is today necessary to be activated to show the bug icon on the menu. Also, I don’t see what transaction id @filip inputed for the debugger.

[Blank]

pragma solidity 0.5.1;

contract DogContract {
function addDog(string memory _name, uint _age) public payable returns (uint);

function getBalance() public view returns (uint) {
    // Use the `address(this).balance` expression to get the contract's current balance
    return address(this).balance;
}

}

contract ExternalContract {
DogContract dc = DogContract(0x76A846CD2aC2E028626A3d1f5ddf32d3a468423D);

function addExternalDog(string memory _name, uint _age) public payable returns (uint) {
    return dc.addDog.value(msg.value)(_name, _age);
}

}