Tag

concurrent

Julia Crash Course: Dictionaries

An excerpt from Julia as a Second Language by Erik Engheim

This article covers:

·   Storing values on keys in dictionaries.

·   Working with pair objects.

·   Using tuples to create dictionaries.

·   Comparing dictionaries and arrays.

Read it if you’re interested in the Julia language or in how it handles dictionaries.

Why Should You Program with Julia?

An excerpt from Julia as a Second Language by Erik Engheim

This article covers:

What type of problems Julia solves.
The limits of statically-typed languages.
Why the world needs a fast dynamically-typed language.
How Julia increases programmer productivity.

Read it if you’re interested in the Julia language and its strengths and weaknesses.

Managing Component State with the useState Hook

From React Hooks in Action by John Larsen

If you’re building React apps, then you’re expecting the data your app uses to change over time. Whether it’s fully server-rendered, a mobile app or all in a browser, your application’s user interface should represent the current data or state at the time of rendering. Sometimes multiple components throughout the app will use the data, and sometimes a component doesn’t need to share its secrets and can manage its own state without the help of mammoth, application-wide state-store behemoths. In this article, we’ll keep it personal and concentrate on components taking care of themselves, without regard for other components around them.

Exploring the useEffect API with Easy Examples

From React Hooks in Action by John Larsen

Some of our React components are super-friendly, reaching out to say “hi” to APIs and services outside of React. Although they’re eternally optimistic and like to think the best of all those they meet, there are some safeguards to be followed. In this article, we’ll look at setting up side effects in ways that won’t get out of hand. In particular, we’ll explore these four scenarios:

§ Running side effects after every render

§ Running an effect only when a component mounts

§ Cleaning up side effects by returning a function

§ Controlling when an effect runs by specifying dependencies

To focus on the API we’ll create some easy component examples. First up, let’s say “Bonjour, les side-effects.”

Becoming a More Effective React Developer

From React Hooks in Action by John Larsen

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