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Oliver Jumpertz Profile picture
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7 May, 6 tweets, 2 min read
Want to get into smart contract development and learn Solidity? Want to get into an area of software development where salaries currently rise through the roof?

Here are 5 awesome resources that help you to get into the language of the Ethereum VM!

🧵👇🏻
1️⃣ CryptoZombies

CryptoZombies is an awesome approach to teaching Solidity. You learn Solidity by basically playing a game, and it's free!

Learning through CryptoZombies definitely isn't as dry as the zombies are themselves!

cryptozombies.io
2️⃣ EthereumDev

EthereumDev gives you a full free course that covers everything you need to know in the beginning. It also covers interacting with the blockchain through JavaScript, which definitely helps you to build your own dApps!

ethereumdev.io
3️⃣ Smart Contract Best Practices

Although this article has "Best Practices" in its name, it is more like an awesome overview of everything you need to know about developing smart contracts. It covers linters, tests, and actually everything!

yos.io/2019/11/10/sma…
4️⃣ Learn Solidity In 15 Minutes

This course is for more experienced developers. If you already know your craft, you can get an easy entry into Solidity in only ~15 minutes! And even if it takes you longer, it's still worth going through it!

learnxinyminutes.com/docs/solidity/
5️⃣ Solidity Cheat Sheet

This awesome cheat sheet covers everything you'd need when working with Solidity. You can use it as a reference whenever you want to quickly look something up.

topmonks.github.io/solidity_quick…

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More from @oliverjumpertz

Oliver Jumpertz Profile picture
3 May
I got asked why people get no engagement on their tweets, no new followers, and how to fix this about 10 times in the last 24 hours.

Here is a thread of possible reasons and how to fix them for all of you, based on my own experience!

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1️⃣ You Shout Into The Void

When you have a low follower count and no one replies, likes, or retweets your tweets, it might be that people simply don't see you.
How tweets are represented to users roughly works as follows:

Tweets are either represented in a curated feed (the top tweets) or another version that is sorted by latest.

The curated feed is the default, and this is where the algorithm reigns.
Read 35 tweets
Oliver Jumpertz Profile picture
2 May
Code Reviews are an awesome way to use the experience and knowledge of a team to create good software. Not all review processes are enjoyable, though.

Here are 6 tips to make your review process better and more enjoyable for everyone!

🧵🔽
1️⃣ Make Expectations Clear

A good review process should both be standardized and individual. The terms of the process should be written down and transparent for everyone on the team. Each team member should know what is expected of them and all team members should agree ...
... on the terms. Changing the terms should always be a democratic process within the team. If the team disagrees on changes or terms, it should discuss the issues until there is consent.

On the other hand, the process should be flexible enough to allow for individuality.
Read 19 tweets
Oliver Jumpertz Profile picture
30 Apr
I started to take Twitter seriously last year. Within one year I learned a lot about what advantages having an online presence can actually have.

Here are 4 of the more important things that happen when you build your online presence.

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1️⃣ You Make Friends

When you interact with other people online, you start to slowly build a connection. You get to know each other and at some point, you perhaps even have a call or a video meeting. This is where strangers can become friends.
Those are the people who interact with you frequently and with whom you have the best discussions. They are there to help when you need them, always.

Those internet friends can also be the ones opening up opportunities to you.
Read 13 tweets
Oliver Jumpertz Profile picture
25 Apr
Do you want to get into Web 3.0 as a web developer and take the next step on your awesome journey?

Awesome! Time for a small introduction to Web 3.0 development with JavaScript and ethers.js!

🧵👇🏻
0️⃣ What Is ethers.js?

ethers.js is a JavaScript library that allows you to interact with the Ethereum blockchain, as well as its ecosystem.

Simply stated: You can access your wallet, send transactions, and interact with smart contracts through it.
1️⃣ Installation

Let's assume that you already have a JavaScript (frontend) project of any kind set up. If not, do that first.

Before you now install ethers, you should get one last prerequisite: MetaMask.
Read 15 tweets
Oliver Jumpertz Profile picture
23 Apr
From time to time you read the term Web 3.0. For many of us, however, this term is still mysterious.

Time to shed some light on it and explain what it actually is all about!

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0️⃣ The Web Today

The web as we know it today is actually already Web 2.0. It is an extension of the original Web (1.0). In the beginning, the web was meant for websites to provide the information and users to consume it.

Web 2.0 changed this and brought the user into the game.
Users started to create the content themselves while websites became the platform to distribute this new type of content instead of only consuming information.

Especially social media made Web 2.0 a reality and kick-started an evolution that still goes on today.
Read 22 tweets
Oliver Jumpertz Profile picture
21 Apr
Consensus algorithms are actually a necessity for blockchains to function properly and are at the heart of any implementation.

And did you know that there are actually quite a few of them? Let's take a look at some interesating ones!

🧵👇🏻
0️⃣ What Is A Consensus Algorithm?

Blockchains are decentralized. There is never a central entity that can decide what is true and what is not. Instead, in a blockchain network, a variety of nodes interact with each other.
As a blockchain usually stores data in a chain of blocks (hence the name), the network must decide what the actual truth is together, This is where consensus algorithms come in. Everyone can append a block. If two participants do it at the same time, the chain is forked.
Read 23 tweets

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