Piece of code with constructor

by Pierre   Last Updated August 01, 2020 13:28 PM

Can you explain me what this piece of code does please? i don't understand it at all.

constructor() public { addCandidate("candidate 1"); addCandidate("candidate 2"); } function addCandidate(string name) private { candidateCount += 1; candidates[candidateCount] = Candidate(candidateCount, name, 0); }

Thank you very much

Take care

Tags : solidity

Answers 1

The constructor is a function that is called once, when you deploy a contract to the network. It cannot be called manually, after deployment. This code will run the addCandidate function twice on deployment, which adds new Candidates to the candidates array (or mapping, it's not entirely clear from the snippet you posted).

candidates[candidateCount] = ... basically assigns a value to the array, where the index is candidateCount. If the candidateCount is 0 by default, this will create a candidate for index 1 and 2.

August 01, 2020 13:06 PM

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