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Learner Reviews & Feedback for Smart Contracts by University at Buffalo

4.6
stars
2,264 ratings

About the Course

This second course of the Blockchain specialization will help you design, code, deploy and execute a smart contract – the computational element of the blockchain technology. Smart contracts allow for implementing user-defined operations of arbitrary complexity that are not possible through plain cryptocurrency protocols. They allow users to implement conditions, rules and policies of the domain applications. Smart contracts are a powerful feature that, when properly designed and coded, can result in autonomous, efficient and transparent systems. You will design and program smart contracts in Solidity language, test and deploy them in the Remix development environment, and invoke them from a simple web interface that Remix provides. This course features best practices for designing solutions with smart contracts using Solidity and Remix IDE. Main concepts are delivered through videos, demos and hands-on exercises....

Top reviews

DM

Dec 17, 2019

Excellent course! Provided a good overview of how smart contracts adds a layer of value to the evolution in blockchain technology. The hands on programming experience was quite helpful as well.

HT

Apr 8, 2019

Thank you; excellent starting point so I can have a good foundation to learn more Solidity programming; the discussion forum is helpful when I submit the code at the end of the project.

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276 - 300 of 446 Reviews for Smart Contracts

By Alberto I A

•

Mar 18, 2020

Loved it!

By Minnamreddy V R

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Dec 5, 2021

not much

By patnelt

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Oct 4, 2021

perfect

By SWAPNIL S S

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May 10, 2020

Nice one

By German B

•

Oct 23, 2018

Excelent

By Surya M

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Sep 30, 2022

Good.

By SolidGuru

•

Aug 20, 2022

Thanks

By Sri H

•

Jun 20, 2020

Great.

By 林Lin智海Chihhai

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Jan 21, 2019

useful

By nguyá»…n v t

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Oct 14, 2022

good

By Divyansh S

•

May 17, 2022

great

By Param P

•

Oct 3, 2021

Nice!

By Miguel M

•

Sep 19, 2019

cool!

By Jean P R P G

•

May 29, 2022

good

By Cristian P

•

Oct 18, 2021

nice

By ajaykumar B

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Apr 30, 2021

good

By Bussetty S S

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Apr 3, 2021

GOOD

By SUTHAHAR P

•

Jun 2, 2020

Good

By Solaiyapparaja B

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May 27, 2020

Good

By Babatide A

•

Jun 11, 2019

Good

By Jeff G

•

Mar 17, 2024

For me, an experienced developer, the course was quite easy but still useful. The topics were good introductions to the serious reading outside the course. The course gives structure to the readings which helped; I've had to struggle through learning languages from the specs in the past and it's not easy. The final project was annoying; it required the use of "not best practices" as the automated grader is looking for specific keywords. Also, Solidity is up to version 0.8.25 and the Remix user interface bears little resemblance to what we see in the course. The course needs a serious facelift. It would be good to preface this course and the next course with an overview of how smart contracts and Web3 Dapps interact. As I've worked through this, it's becoming clearer that a lot of the code that I would normally expect to see in Smart Contracts isn't going to be there. Primarily, Smart Contracts should only return values that reflect the status of the executing transaction (e.g. Solidity 0.8.25 on Remix does not support returning strings or arrays); any data that a user interface might use should be logged via "events" (now that I know that Web Dapps have a "watch" handler that can look for events). Thus, Smart Contracts exist to primarily write to or modify the blockchain, while Dapps read from it.

By Paolo D M

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Jul 13, 2018

One of the best course i found here in coursera. the only thing i didn't give 5 stars is cause of the final exam: i think it's a little tricky to understand what's wrong with the code if there's no direct feedback on where the error is, the automatic-evaluator kept saying that something is wrong but not where!The course still is really good, good explanations, a lot of resources and plenty of complementary websites, videos, sources that helped to understand the course. thank you so much, i'll begin the next course soon!

By Alejandro V

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Aug 4, 2021

This course was particularly important because it deals in good detail with the inner workings of smart contracts and its programing language. What I found disrupting is that the Remix IDE shown in the videos won't match what i saw in my browser, making hard to follow the instructions. For example, I coudn't find the details button one of the quizzes ask to click. Those two question were wrong because of that. (I wasn't able to see the transaction details)

By Shriniwas A

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Aug 14, 2018

I think the assignments could have less template code in it and there should be a more quality driven way of evaluating the code. I agree the former is not really the intention of the course and the latter is time consuming. But the course would feel more comprehensive and practice driven with these two changes. Maybe alumni could be roped in as mentors or TAs to do the grading ?

By James W

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Apr 30, 2020

This class is very good. The lectures and class material are good. I can't give it a full 5 stars because it needs to be updated to 2020. I know that Solidity and the world of blockchain is always changing, but if Coursera doesn't keep up with changes it will become obsolete and no longer a viable option for advanced education.