Tag: scala

The back-end

Refuse to double write: Skillfully subscribe to Lindorm data

February 6, 2024

by Kathryn Paterson-Murphy

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Introduction: This article introduces consistency problems in dual-write scenarios, describes three solutions in detail, and provides best practices for Lindorm data subscription for DB->Binlog->Kafka. Dual...

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The back-end

Parallel task flow based on composite futures

February 5, 2024

by Anvi Garg

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Future is a powerful and convenient tool for asynchronous programming that has been proven reliable and incorporated into the Scala standard library.

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The back-end

Scala: Gracefully transfer state in pure functions

February 5, 2024

by Neysa Zacharia

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The topic of this chapter is how to write purely functional programs that can save and transfer state. The idea is clear: use functions to...

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The back-end

Jlogger – a Scala library that prints logs in JSON format

February 5, 2024

by Miss Chloe Perry

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I have developed a Scala log library jLogger, which is type safe and developed based on CATS and supports multiple log levels, JSON format and...

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The back-end

Akka combat: Analyze Akka fault tolerance mechanism

February 5, 2024

by Raewyn Buchanan

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We always want systems to be available 100% of the time, and Akka provided the idea of Let it Crash.

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The back-end

Akka Combat: Build the first Akka HTTP app

February 4, 2024

by Iain Allen

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This chapter uses the asynchronous programming tool Akka to write a small HTTP Severice from Akka in Action

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The back-end

Akka: Test driven development TDD

February 4, 2024

by Jessica Holland

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TDD, short for Test-driven development, is a core practice in Agile development. This chapter introduces Akka testing based on TDD.

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The back-end

Cats (II) : Citing transparency and equality reasoning

February 4, 2024

by William Forrest

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This post was posted by Yison on the ScalaCool team blog. The last article introduced the thinking of functional programming, this time we will understand...

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The back-end

Cats: Show Type class

February 4, 2024

by Zachary Taylor

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This article is about Cats, a basic type class: Show. In the previous section we learned how to implement a Type class in Scala. In...

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The development tools

Intellij IDEA development environment construction, Scala configuration and packaging

February 4, 2024

by Robin Baker

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1. Intellij IDEA development environment construction recently, I have been learning Scala. In addition to writing Scala programs, I also need to create maven projects...

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The back-end

Cats (I) : Start from functional programming thinking

February 4, 2024

by 葛雅琪

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This post was posted by Yison on the ScalaCool team blog. That's right, it's a functional library designed by Ty Elevel, a bunch of functional...

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The back-end

Explore Scala’s non-strict evaluation and streaming data structures

February 4, 2024

by Sumer Bandi

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Non-strict evaluation is a basic skill to improve the efficiency and modularity of functional programming. It is closely related to the Stream Stream, and the...

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The back-end

Scala series 10 – Functions & Closures & Cremation

February 4, 2024

by 丁怡安

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The difference between a function and a method in Scala is very small; if a function is a member of an object, it is called...

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The back-end

Scala: Exception handling in functional programming

February 4, 2024

by 李鈺婷

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Try-catch doesn't fit the FP programming paradigm, and Scala offers options, Either, and other solutions.

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The back-end

Kafka learning Notes (2) : A preliminary study of Kafka

February 3, 2024

by Tracey Bailey

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After reading the last article, I believe you have a preliminary understanding of the message system and Kafka's overall composition, the best way to learn...

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The back-end

Play! Framework Series ii: Play’s project structure

February 3, 2024

by Katie Grant

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This post was posted by Shaw on the ScalaCool team blog. In the Play! In Framework Series 1, we got a first look at Play!...

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The back-end

Play! Framework series (I) : Primary play Framework

February 3, 2024

by Kismat Kant

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This post was posted by Shaw on the ScalaCool team blog. Play! Is an efficient Java and Scala Web application framework that can be used...

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The back-end

About Spark – Extracting the Hive table (1)

February 3, 2024

by Margaret Lloyd

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Spark reads hive table data, including directly reading Hive table data in SQL. Read the Hive table and hive partition table using HDFS files. Sparksession...

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The back-end

Ubuntu16.04/Scala2.11.8 installation tutorial

February 3, 2024

by Janice Buckley

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Scala2.11.8 Installation Tutorial "This is my first day of participating in the 2022 First Update Challenge. For details, see: 2022 First Update Challenge". About the...

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The back-end

New features in Scala 3

February 2, 2024

by Jessica Barton

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The gist of Scala 3: clear context and a more powerful type system. This article introduces some of Scala's main features.

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The back-end

Learn Java 8 behavior parameterization in five minutes

February 1, 2024

by Tamara Miller

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The improvements to Java8 are more profound than any change in history. Java continues to evolve as a result of changes in the programming language's...

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android

Kotlin val list: ArrayList<String>= ArrayList()

January 31, 2024

by Kaia Cole-Brown

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Here we go, this time a bowl of Kotlin parser questions

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The back-end

If constructs and if expressions in functional programming are not the same thing. Explore Scala’s control structure and you’ll get what you want

January 28, 2024

by 程詩涵

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Control Structures Scala has the basic Control Structures you'd expect to find ina programming language: if/then/else, for Loops, and try/ Catch /finally

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The back-end

From Java to Scala (iii) : Object applications

January 28, 2024

by Joseph Young

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In the last Java to Scala series, I think you have more or less a grasp of object in terms of language features. After understanding...

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The back-end

Scala types (5)

January 28, 2024

by 王家豪

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Types of Scala types (4) directory 21. Structure type 22. Path dependent Type 23. Type Projection 24. Specialized Types 25. Type Lambda 21. Strucural Types...

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The back-end

Akka Persistence by Actor Persistence

January 28, 2024

by Trevor Clark

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This post was posted by GodPan on the ScalaCool team blog. The write this part mentioned now, because this paragraph of time development project just...

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The back-end

Scala Series I – Introduction to Scala and development environment configuration

January 28, 2024

by Paula Barton

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Scalable Language, as Scala stands for "Scalable Language," is so named because it is designed to grow with the needs of its users. Scala is...

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The back-end

A web game tool developed with the full-stack Scala architecture

January 28, 2024

by Ryan Hodson

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There is a Japanese mobile game called Blue Fantasy. It looks something like this: The game, like World of Warcraft, has what are called "replicas"...

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The back-end

Cris Scala Note-taking (8) : Object-oriented Intermediate – Encapsulation

January 28, 2024

by Bradley Stanley

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Encapsulation from the point of view of data: Encapsulation is the encapsulation of abstract data and operations on data. Data is protected internally. Other parts...

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The back-end

Notes on Functional programming 12

January 27, 2024

by Clive Elliott

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It's not very good performance, you only need a second prime, but you find all the primes from 1000 to 10000. It can be improved...

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