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Uber Migrates 75,000+ Test Classes from Junit 4 to Junit 5 Using Automated Code Transformation
Uber engineers migrated over 75,000 test classes from JUnit 4 to JUnit 5 using automated code transformation with OpenRewrite and internal orchestration. By enabling the JUnit Platform for dual execution with Bazel and validating changes through CI, the team modernized testing infrastructure while maintaining correctness at monorepo scale.
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OpenCode: an Open-source AI Coding Agent Competing with Claude Code and Copilot
Open-source AI coding tool OpenCode features a native terminal-based UI, multi-session support, and compatibility with over 75 models, including Claude, OpenAI, Gemini, and local models. In addition to its CLI tool, OpenCode is also available as a desktop app and and an IDE extension for VS Code, Cursor, and other tools.
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Android Studio Otter Boosts Agent Workflows and Adds LLM Flexibility
The latest Android Studio Otter feature drop introduces several new features that make it easier for developers to integrate AI-powered tools in their workflows, including the ability to set which LLM to use, enhanced agent mode through device interaction, support for natural language testing, and more.
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Kimi's K2 Opensource Language Model Supports Dynamic Resource Availability and New Optimizer
Kimi released K2, a Mixture-of-Experts large language model with 32 billion activated parameters and 1.04 trillion total parameters, trained on 15.5 trillion tokens. The release introduces MuonClip, a new optimizer that builds on the Muon optimizer by adding a QK-clip technique designed to address training instability, which the team reports resulted in "zero loss spike" during pre-training.