#scastie

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Web frameworks
fromInfoQ
13 hours ago

The Spring Team on Spring Framework 7 and Spring Boot 4

Spring Boot 4 enhances startup times and modularization, while Spring Framework 7 integrates core features like retry and concurrency throttling.
#java
Java
fromInfoQ
1 day ago

Java News Roundup: JDK 27 Release Schedule, Hibernate, LangChain4j, Keycloak, Helidon, Junie CLI

Java updates include JEP 532 for primitive types in patterns, JDK 27 release schedule, and Jakarta EE 12 discussions.
Java
fromInfoQ
1 week ago

Java News Roundup: TornadoVM 4.0, Google ADK for Java 1.0, Grails, Tomcat, Log4j, Gradle

TornadoVM 4.0 and Google ADK for Java 1.0 are released, alongside updates for JDK 27 and Jakarta EE 12.
Java
fromInfoQ
2 weeks ago

Java News Roundup: GraalVM Build Tools, EclipseLink, Spring Milestones, Open Liberty, Quarkus

Multiple Java frameworks and tools have released updates and new features, enhancing performance and fixing issues.
Java
fromMedium
3 weeks ago

Java vs Kotlin vs Scala: Which to Choose in 2026

Java, Kotlin, and Scala serve different audiences and problems despite running on the JVM.
Java
fromDevOps.com
2 months ago

Survey Surfaces Massive Amount of Java Technical Debt

Dead and unused code and frequent Java CVEs reduce developer productivity; Java remains widely used with growing AI use and many migrating from Oracle Java.
Software development
fromMedium
2 months ago

Kotlin vs Scala vs Java: Which Language Wins? (2026)

Choosing between Java, Kotlin, and Scala directly impacts project outcomes because they differ in stability, market share, developer satisfaction, cost, and specialization.
Java
fromInfoQ
1 day ago

Java News Roundup: JDK 27 Release Schedule, Hibernate, LangChain4j, Keycloak, Helidon, Junie CLI

Java updates include JEP 532 for primitive types in patterns, JDK 27 release schedule, and Jakarta EE 12 discussions.
Java
fromInfoQ
1 week ago

Java News Roundup: TornadoVM 4.0, Google ADK for Java 1.0, Grails, Tomcat, Log4j, Gradle

TornadoVM 4.0 and Google ADK for Java 1.0 are released, alongside updates for JDK 27 and Jakarta EE 12.
Java
fromInfoQ
2 weeks ago

Java News Roundup: GraalVM Build Tools, EclipseLink, Spring Milestones, Open Liberty, Quarkus

Multiple Java frameworks and tools have released updates and new features, enhancing performance and fixing issues.
Java
fromMedium
3 weeks ago

Java vs Kotlin vs Scala: Which to Choose in 2026

Java, Kotlin, and Scala serve different audiences and problems despite running on the JVM.
#github
Software development
fromInfoQ
2 days ago

GitHub Copilot CLI Reaches General Availability

GitHub's Copilot CLI is now generally available, enhancing AI-assisted development in software through natural language commands and autonomous workflows.
fromTheregister
2 months ago
Software development

GitHub ponders kill switch for pull requests to stop AI slop

GitHub is confronting a surge of low-quality, often AI-generated contributions that burden open-source maintainers and is planning tools and restrictions to mitigate the problem.
Software development
fromInfoQ
2 days ago

GitHub Copilot CLI Reaches General Availability

GitHub's Copilot CLI is now generally available, enhancing AI-assisted development in software through natural language commands and autonomous workflows.
#scala
Scala
fromMedium
3 days ago

Scala's Growth Model - Building Inward, Starving Outward

Scala's ecosystem excels internally but struggles to attract new users due to structural and cultural barriers.
Scala
fromMedium
1 week ago

100 Scala Interview Questions and Answers for Technical and Functional Roles

Preparing for a Scala interview requires understanding functional programming concepts and structured questions for effective evaluation.
Scala
fromScala-lang
2 weeks ago

Scala 3.8.3 is now available!

Scala 3.8.3 introduces local coverage exclusions and a safe mode for capability-safe code, enhancing code safety and coverage measurement.
Scala
fromMedium
2 weeks ago

Data Extraction and Classification Using Structural Pattern Matching in Scala

Scala pattern matching enhances code readability and extensibility in real-world data engineering use cases.
Scala
fromScala-lang
3 weeks ago

Porting the Scala 2 optimizer to Scala 3

The Scala 3 compiler's optimizer improves performance by 10-30% for high-level functional code without complicating developer tasks.
Scala
fromTypelevel
1 month ago

Typelevel Summer of Code 2026

Antonio Jimenez is a Spanish software engineer based in Switzerland with five years of Scala experience, specializing in functional programming and contributing to Cats Effect's I/O runtime development.
Scala
fromMedium
3 days ago

Scala's Growth Model - Building Inward, Starving Outward

Scala's ecosystem excels internally but struggles to attract new users due to structural and cultural barriers.
Scala
fromMedium
1 week ago

100 Scala Interview Questions and Answers for Technical and Functional Roles

Preparing for a Scala interview requires understanding functional programming concepts and structured questions for effective evaluation.
Scala
fromScala-lang
2 weeks ago

Scala 3.8.3 is now available!

Scala 3.8.3 introduces local coverage exclusions and a safe mode for capability-safe code, enhancing code safety and coverage measurement.
Scala
fromMedium
2 weeks ago

Data Extraction and Classification Using Structural Pattern Matching in Scala

Scala pattern matching enhances code readability and extensibility in real-world data engineering use cases.
Scala
fromScala-lang
3 weeks ago

Porting the Scala 2 optimizer to Scala 3

The Scala 3 compiler's optimizer improves performance by 10-30% for high-level functional code without complicating developer tasks.
Artificial intelligence
fromInfoQ
5 days ago

Choosing Your AI Copilot: Maximizing Developer Productivity

Most developers are at an intermediate level of AI-assisted coding, with around 50% generating little to no code using AI.
Python
fromPycoders
6 days ago

PyCoder's Weekly | Issue #729

SerpApi provides structured JSON from search engines, simplifying data retrieval for AI applications.
fromInfoWorld
3 days ago

Swift for Visual Studio Code comes to Open VSX Registry

The Swift for Visual Studio Code extension adds first-class language support for projects built with Swift Package Manager, enabling seamless cross-platform development on macOS, Linux, and Windows.
Web frameworks
Software development
fromTheregister
1 week ago

AI slop got better, so now maintainers have more work

AI-generated reports improve quality but increase workload for maintainers, necessitating more reviewers in open-source projects.
fromScala-lang
2 weeks ago

Announcing Scala Days 2026

The Scala Days 2026 conference will take place 12 - 13 October in Berlin, Germany, known for its strong culture of collaboration and its growing role in advancing digital sovereignty through open technologies.
Berlin
Java
fromScala.js
1 week ago

Announcing Scala.js 1.21.0

Scala.js 1.21.0 introduces compatibility changes, deprecates JDK < 17, disables Google Closure Compiler by default, and includes performance improvements.
DevOps
fromInfoWorld
2 weeks ago

New JetBrains platform manages AI coding agents

JetBrains Central connects agents with necessary context and tools, enabling seamless interaction within existing development environments.
#open-source
Software development
fromZDNET
1 week ago

How AI has suddenly become much more useful to open-source developers

AI tools are becoming increasingly useful for open-source maintainers, but legal and quality issues remain.
Software development
fromZDNET
1 week ago

How AI has suddenly become much more useful to open-source developers

AI tools are becoming increasingly useful for open-source maintainers, but legal and quality issues remain.
fromSubstack
1 month ago

Friday Links #36: JavaScript, AI Tools, and Ecosystem Updates

The TypeScript team released an early preview of TypeScript 6. This release is mainly about internal changes preparing for the future Go-based compiler planned for TypeScript 7. Large monorepos could see dramatic speed improvements once the Go compiler lands.
JavaScript
Software development
fromInfoQ
3 weeks ago

Stripe Engineers Deploy Minions, Autonomous Agents Producing Thousands of Pull Requests Weekly

Minions are autonomous coding agents at Stripe that generate production-ready pull requests with minimal human intervention.
Scala
fromMedium
2 weeks ago

Breaking Scala's Nil with Java Reflection

Java reflection in Spring Data MongoDB caused a bug in Scala's Nil singleton, revealing a mismatch between Scala's guarantees and JVM behavior.
#scala-interview-preparation
fromTypelevel
1 month ago

Typelevel Foundation is a 501(c)(3) public charity

The process of applying for charitable status is challenging, and especially so for open source organizations, which frequently receive denials. Working together with our attorneys, we prepared an application that explained what Typelevel does and why this work is charitable, citing the unique innovations of our projects, our participation in conferences and mentoring programs, and our commitment to open collaboration.
Artificial intelligence
fromZDNET
1 month ago

Why AI is both a curse and a blessing to open-source software - according to developers

AI can benefit open source when properly applied for security analysis, but causes harm when generating low-quality automated bug reports that overwhelm maintainers with false positives.
Software development
fromInfoWorld
4 weeks ago

How AI is changing open source

Open source shifted focus from consumer visibility to critical infrastructure layers like Kubernetes, observability, and platform engineering that power AI and cloud-native systems.
Java
fromInfoWorld
3 weeks ago

Java future calls for boosts with records, primitives, classes

Java is advancing record creation, primitive boxing, and pattern matching through multiple JEPs to improve code conciseness and type handling capabilities.
Tech industry
fromTechzine Global
1 month ago

OpenAI builds development platform as an alternative to GitHub

OpenAI is developing its own code-hosting platform to compete with GitHub after experiencing service interruptions, with plans to potentially offer it to customers.
Java
fromInfoQ
3 weeks ago

Java 26 Delivers Language Innovation, Library Improvements, Performance and Security

Java 26 introduces 10 JEPs including improvements to libraries, language innovation, performance, and security, with five features still in preview or incubator stages.
Scala
fromMedium
3 weeks ago

What I Learned Building Secure Observability in Scala

Build secure Scala applications by keeping core logic in plain IO and using a temporary Mission Stack only for sensitive operations, integrating security with observability from the start rather than adding it later.
fromInfoWorld
1 month ago

OpenAI developing GitHub rival as AI coding platform race intensifies

To dislodge that, OpenAI would need to deliver a platform that is meaningfully AI native rather than AI augmented. That means the repository itself becomes a living system that continuously understands the codebase, its intent, and its risks, rather than a passive store of files.
DevOps
Java
fromInfoQ
4 weeks ago

Java News Roundup: JHipster 9.0, Project Valhalla, Spring, Helidon, OpenXava, Java Operator SDK

JHipster 9.0 GA released alongside updates to JDK 26/27, Project Valhalla, Spring Framework, and multiple Java ecosystem tools and libraries.
Software development
fromMedium
1 month ago

Unified Databricks Repository for Scala and Python Data Pipelines

Databricks repositories require structured setup with Gradle for multi-language support, dependency management, and version control to scale beyond manual notebook maintenance.
Scala
fromScala-lang
1 month ago

Hardening Scoverage Support in Scala 3

Scoverage, Scala's standard code coverage tool, underwent systematic testing improvements to ensure reliability across compiler language features and future compatibility.
Web frameworks
fromScala-lang
1 month ago

Migrating sbt plugins to sbt 2 with sbt2-compat plugin

The sbt2-compat plugin enables plugin authors to cross-publish for both sbt 1 and sbt 2 using a unified codebase with version-specific compatibility abstractions.
Scala
fromMedium
1 month ago

100 Scala Scenario-Based Interview Questions and Answers

Scala technical interviews prioritize practical problem-solving and design reasoning over syntax memorization, with scenario-based questions evaluating real-world technical capabilities.
Software development
fromTechCrunch
1 month ago

Anthropic launches code review tool to check flood of AI-generated code | TechCrunch

Anthropic launched Code Review, an AI tool integrated into Claude Code to automate pull request reviews and address bottlenecks created by increased code generation from AI-assisted development.
#functional-programming
fromRubyflow
2 months ago

The Ruby AI Newsletter

This edition features tons of content, articles, and open source releases.
fromInfoQ
2 months ago

LinkedIn Leverages GitHub Actions, CodeQL, and Semgrep for Code Scanning

LinkedIn has redesigned its static application security testing pipeline (SAST) to provide consistent, enforceable code scanning across a GitHub-based, multi-repository development environment. The initiative was a result of the company's shift-left strategy by delivering fast, reliable, and actionable security feedback directly in pull requests, strengthening the security of LinkedIn's code and infrastructure and helping protect members and customers.
Information security
Information security
fromTechzine Global
2 months ago

Misuse of VS Code tasks poses risk to developers

VS Code tasks.json can automatically run commands when a folder is opened, enabling supply-chain attacks that execute malicious, persistent code across platforms.
Artificial intelligence
fromInfoWorld
2 months ago

JetBrains IDEs integrate OpenAI Codex

GPT-5.2-Codex is integrated into JetBrains IDEs, enabling developers to plan, write, test, review, and deploy code from within supported JetBrains editors.
#scala-3
Software development
fromScala-lang
2 months ago

Recap of Advent of Code 2025

The Scala community actively engaged with Advent of Code 2025 through Discord, a solutions website with 106 submissions, explainer entries, and newcomer support.
fromScala-lang
2 months ago

Scala 3.8 released!

We're pleased to announce the release of Scala 3.8 - a significant release that modernizes the Scala ecosystem and paves the way for Scala 3.9 LTS. This release introduces a standard library compiled by Scala 3 itself, stabilizes highly-anticipated features like Better Fors (SIP-62) and runtimeChecked (SIP-57), and introduces experimental features including flexible varargs and strict equality pattern matching. A runtime regression was detected after publishing Scala 3.8.0 artifacts.
Scala
Software development
fromInfoWorld
1 month ago

Abandoned project linking Java, JavaScript makes a comeback

The Detroit project revives native JavaScript and Python script engines for the JVM using Chrome V8 and CPython, with plans to become an official OpenJDK project while leveraging the Foreign Function & Memory API.
#typelevel
fromMedium
2 months ago

Two Months of Vibe-Coding: Scala, Constraints, Trust and Shipping

If there's one thing I want you to take away from this article, it's this: testing harness is the most important thing for vibe-coding. Not prompt engineering, not fancy plugins, just constraining your AI outside AI toolchain. I'm calling it harness because it's not only tests. It's tests, types, linters, and any other automated checks you can put in place. The more you rely on AI, the more harness you need.
Software development
Software development
fromMedium
2 months ago

Agentic Workflows in Scala (Without the Buzzwords)

Durable, decision-driven systems require explicit state, clear decision points, and explicit workflow orchestration rather than opaque autonomous agent loops.
Software development
fromInfoWorld
2 months ago

Go developers mixed on AI coding tools - survey

Most Go developers use AI-powered development tools, but satisfaction with those tools is moderate; 91% report satisfaction with the Go language.
fromMedium
2 months ago

Agentic Workflows in Scala (Without the Buzzwords)

High-level view of the travel search workflow, highlighting parallel searches, explicit decision points, and iterative refinement. In Scala, we define this workflow using Workflows4s, encoding both state and transitions explicitly in the type system. Instead of opaque state blobs or untyped contexts, the state of the process is represented using algebraic data types - types like Started, Found, Sent, and Booked - each corresponding to a distinct point in the workflow's lifecycle.
Scala
Software development
fromInfoQ
2 months ago

Are You Missing a Data Frame? The Power of Data Frames in Java

DataFrames and data-oriented programming promote modeling immutable data separately from behavior, making Java suitable for DataFrame-style data manipulation comparable to Python.
fromTheregister
2 months ago

VS Code for Linux may be secretly hoarding trashed files

The reason for this is Snap - a Linux application packaging format - creates a local Trash folder for each VS Code version, one that's separate from the system-managed Trash, according to a VS Code bug report dating back to November 11, 2024. Not only that, but Snap keeps older versions of VS Code after updates, potentially multiplying the number of local Trash folders and the trashed-but-not-deleted files therein. Emptying the system Trash folder doesn't affect the local instances.
Software development
fromInfoWorld
2 months ago

For agentic AI, other disciplines need their own Git

Software engineering didn't adopt AI agents faster because engineers are more adventurous, or the use case was better. They adopted them more quickly because they already had Git. Long before AI arrived, software development had normalized version control, branching, structured approvals, reproducibility, and diff-based accountability. These weren't conveniences. They were the infrastructure that made collaboration possible. When AI agents appeared, they fit naturally into a discipline that already knew how to absorb change without losing control.
Software development
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