Tag: scala

The back-end

Shapeless Beginner’s Guide (2) : Natural number type Nat

January 26, 2024

by 李詩婷

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This post was posted by Jilen on the ScalaCool team blog. The previous article introduced an important feature of Shapeless: the automatic derivation of typeclass...

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The back-end

Spark family: Build Scala development environment in Windows 10

January 26, 2024

by 彭家豪

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Scala wraps java-related classes and interfaces, so it depends on the Jvm environment. Configuration successful. Yes, it's that simple. Create a Scala folder in the...

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The back-end

Scala series 4 – Array Array

January 26, 2024

by Dr. Steven James

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In Scala, if you need an Array of constant length, you use Array. But note the following: In Scala, (index) is used instead of [index]...

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The back-end

Spark Write in parallel

January 26, 2024

by Mishti Sibal

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A few lines of code are more than 60% faster

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The back-end

I heard that Scala doesn’t know you yet. Why don’t you get to know Scala first?

January 23, 2024

by Riley Cochran

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In a nutshell, Scala is a high-level programming language that combines both object-oriented and functional programming paradigms. Scala's static typing system effectively improves the robustness...

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The back-end

Use Spark to read and analyze binary files

January 23, 2024

by Rati Bajaj

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Customers want to use Spark to analyze the number and ratio of 0s and 1s in binary files. If you want to analyze a directory,...

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The back-end

Are you still using Gradle? I hear Scala developers are using SBT

January 23, 2024

by Navya Sarraf

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I heard that 93.6% Scala developers choose SBT? SBT can mix Java and Scala projects? Let's demystify SBT

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reading

Raise your salary a notch with 30 common big data interview questions

January 23, 2024

by Jessica Johnson

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You've been through a lot of big data learning, but you're still one step away from success, and that's getting an Offer as a big...

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reading

[Bonus] Send the introduction to Scala language video learning materials

January 23, 2024

by Chelsea Willis

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The basic qualities of a good programmer are the ability to learn and drive. You can only rely on yourself if you can stick to...

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reading

Python pit refers to north

January 23, 2024

by Shannon Newton-Mason

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Python pit refers to north 1. A few questions Python2 or Python3? Why are there all kinds of inexplicable errors when installing Python package? How...

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reading

It’s time to learn the real Spark technology

January 23, 2024

by 徐馨儀

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Spark SQL is the best part of Spark. I think the overall complexity is more than 5 times that of Spark Streaming. Spark streaming maintenance...

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The back-end

Flow oriented design ideas

January 23, 2024

by Sophie Ward-Best

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Reactive Programming is asynchronous, non-blocking, highly responsive processing. The core idea is that Everything is stream. From this perspective, we can regard the Design idea...

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Artificial intelligence (ai)

Mmlspark – Microsoft’s open source spark-based distributed machine learning tool

January 23, 2024

by Elizabeth Ford

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Microsoft Machine Learning for Apache Spark

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reading

Scala metaprogramming: Implement Lombok.data

January 23, 2024

by Ms. Sara Sexton

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If you've read Scala Metaprogramming: A Glimpse into Eden, you should theoretically be able to implement Lombok.data. So, I suggest you don't read this article...

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reading

SparkSQL: Convert RDD to DataFrame using reflection, programmatically

January 23, 2024

by Lisa Davis

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Why convert RDD to DataFrame? In this way, Spark SQL can be used for SQL queries directly against any data that can be built as...

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The code of life

Discard bad code smells – improve code quality readability

January 23, 2024

by 高靜宜

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Recently spent time cleaning up: MY understanding of code readability and testability. There is no universal standard for improving code quality, and if you're looking...

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reading

Get started – Big Data in five Minutes a Day

January 22, 2024

by 馬雅惠

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Thought for a long time, ready to write a series of articles, record over the years the thought, feel more content don't know where to...

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The back-end

Scala series 6 – List & Set of commonly used collection types

January 21, 2024

by Anthony Thompson

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A List is an important data structure in Scala. It is very similar to an Array, but a List is immutable and, like a List...

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The back-end

Set up the Spark environment in Standalone mode on Windows

January 20, 2024

by Miss Kathleen Wilson

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Download and decompress Spark 2.1, set SPARK_HOME, and add %SPARK_HOME%\bin to PATH. When you try to run spark-shell on the console, the following error message...

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The back-end

Set up continuous integration and continuous delivery on Travis CI for Scala libraries with SBT-best-practice

January 20, 2024

by Onkar Sharma

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There are many Scala open source libraries on Github. They all have automatic testing capabilities. For example, a small icon (Build Passing) on the README...

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reading

Does Scala 3 no longer support XML?

January 20, 2024

by Hannah Morgan

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Some time ago, I made an XML literal syntax proposal for Scala 3, which is being discussed in the community. This proposal may herald the...

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The back-end

Scala’s higher-kinded type

January 20, 2024

by Bradley Jackson

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Higher-kinded literally means a Higher classification, a Higher level of abstraction. Let's look at an example. Next we define two implicit instances in the companion...

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reading

Learning Scala Chapter 2

January 20, 2024

by Bradley Jackson

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Note: The immutability of a value makes it impossible to assign a changing value to yourself. If the type is not specified, that is, there...

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The back-end

Scala series 4 – Array Array

January 19, 2024

by Kismat Kant

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In Scala, if you need an Array of constant length, you use Array. But note the following: In Scala, (index) is used instead of [index]...

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The back-end

Akka Series (6) : What problems do actors solve?

January 19, 2024

by 梁家銘

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This post was posted by GodPan on the ScalaCool team blog. I am very sorry for the delay because I have been busy with things...

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The back-end

Understand the distributed ID generation algorithm SnowFlake

January 19, 2024

by Lauren Short

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There are many types of distributed ID generation algorithms, and Twitter's SnowFlake is a classic one.

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The back-end

My first Scala program

January 19, 2024

by David Gray

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_.get("commonCount").get (' commonCount ').get (' commonCount ').get (' commonCount ').get (' commonCount ').get (' commonCount ').get (' commonCount ').get (' commonCount ').get (' commonCount ')...

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reading

10 amazing Ruby single lines of code

January 19, 2024

by Shamik Gaba

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Someone came up with 10 single-line examples of Scala. Then CoffeeScript versions took off and I thought of releasing a Ruby version. I find Ruby's...

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reading

Spark function details series of RDD basic conversion

January 17, 2024

by Roy Hughes

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Abstract: RDD: elastic distributed data set, which is a special set, supports multiple sources, has fault tolerance mechanism, can be cached, and supports parallel operation....

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The back-end

Scala Quick start series: declare variables, control structures and functions, common array operations

January 17, 2024

by 賈淑貞

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Scala Quick Start -1- Variable declaration Background Since Spark is developed in Scala, it is important to learn the Scala language before developing Spark applications....

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