Debugging calls vs transactions

Julien Klepatch

When I started to debug Solidity smart contracts, I was really confused by the fact that although there was a return statement in Solidity, I could not always read returned values when triggering functions from outside the smart contract. I was confused because I didn’t know that Ethereum has 2 APIs (calls and transactions) for interacting with smart contracts: calls and transactions.

In this video, I will explain what are calls vs transactions and why it matters when debugging Solidity smart contracts:

0 Comments

Leave a Reply

More great articles

DAO – Part III

In this video, we are going to allow investors to cash out on their investment, in 2 ways: By redeeming…

Read Story

Advanced storage

In this video, we will build on the previous "Simple storage" smart contract, and store list of data instead of…

Read Story

Testing dates in Solidity smart contracts – Part I

Dates are a bit weird in Solidity. Solidity does have some keywords for working with dates, like now, or 1…

Read Story

Never miss a minute

Get great content to your inbox every week. No spam.
[contact-form-7 id="6" title="Footer CTA Subscribe Form"]
Arrow-up