#scala

#scala

Using mkString method of Array class can convert Scala sequence (like Array, List, Seq) to a String.

mkString function can be customized with any separator string to format the output as desired. [ more ]

Scala REPL under MS Windows faced issues with JLine library.

Proposal for a swing-based REPL in Scala for improved functionality. [ more ]

The Scala Ambassadors initiative aims to strengthen the community, promote Scala positively, and support active members.

Ambassadors in the initiative are key Scala figures who aim to assist newcomers, improve communication, and support each other's efforts. [ more ]

Scala developers commonly handle currency using the BigDecimal class.

Joda Money is a promising currency library for Scala development. [ more ]

Start the Mill REPL in the root directory of a Scala project by using the mill command. Choose a specific main method to run interactively within the REPL by specifying the class and package names. [ more ]

To run a Scala script as a Unix/Linux shell script, use a special syntax in the script file.

The 'exec' command in the shell script uses $0 to refer to the script file and $@ to refer to positional parameters. [ more ]

Multi-Paradigm Approach

Big Data and Beyond

Java Compatibility [ more ]

Scala Lists are immutable data structures, elements can't be added directly.

Prepending elements to a Scala List is a common way to add elements. [ more ]

Using foldLeft in Scala can offer a more efficient alternative to map/sum approach for certain algorithms.

There are multiple ways to implement a sum of the squares algorithm in Scala, showcasing the flexibility and readability of the language. [ more ]

1. Squaring numbers in Scala can be done by multiplying the number by itself or using Math.pow function.

2. When squaring an integer in Scala with Math.pow function, the result will be a Double. [ more ]

Getting the current date and time in Scala can be done using java.util.Calendar class or Java's SimpleDateFormat class.

The current minute and hour can be obtained by using Calendar.getInstance() and get() method in Scala. [ more ]

Auto Derivation Magic simplifies JSON to Scala conversion by leveraging case class attributes.

Importing required objects like io.circe.generic.AutoDerivation and sttp.tapir.generic.auto.SchemaDerivation enables auto-derivation for JSON encoding and decoding. [ more ]

Scala simplifies object equality by using the == operator for 'natural' equality, akin to the equals method in Java.

Defining the equals method in Scala requires attention to potential pitfalls like wrong signature, inconsistent behavior, and handling mutable fields. [ more ]

Circe is powerful but sometimes misunderstood

Circe provides building blocks for encoding and decoding JSON [ more ]

Implicit conversions and parameters in Scala enhance libraries by allowing types to act as subtypes, simplifying code.

Implicits automate repetitive tasks, focusing on core logic, improving code readability and conciseness. [ more ]

Abstract members in Scala allow incomplete definitions for implementation in subclasses.

Types of abstract members in Scala include vals, vars, methods, and types, with features like lazy vals and path-dependent types. [ more ]

Weekly Scala news roundup by Petr Zapletal. [ more ]

The Cake Pattern in Scala enables modular programming and simplifies dependency management.

The Cake Pattern breaks down applications into interchangeable traits, making code management and updates easier. [ more ]

The code snippet is an example of counting the occurrences of unique elements in a list of objects.

The code uses foldLeft and mutable Map to efficiently count the elements. [ more ]

Ensuring a secure and seamless user registration process is important for online platforms.

This article discusses the use of Scala, http4s, Slick, Redis, and PostgreSQL to create a robust web service for user registrations. [ more ]

A Scala function called 'slowly' can be used to run a block of code with a delay.

The 'slowly' function can be modified to include a sleep time parameter. [ more ]