PyTorch Reinforcement Learning Guide: From Supervised Learning to MDP, MRP, and Policy

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This article focuses on the core framework of reinforcement learning: an agent takes actions in an environment, receives rewards, and aims to maximize long-term return. Reinforcement learning addresses sequential decision-making, delayed rewards, and the exploration-exploitation tradeoff—problems that static supervised learning cannot handle well. Keywords: Reinforcement Learning, Markov Decision Process, PyTorch. Technical Specification Details Primary Language … Read more

Claude Code Beginner Guide: Build an Efficient Workflow with CLAUDE.md, Plan Mode, MCP, and Hooks

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[AI Readability Summary] Claude Code works best when you treat it as a reusable workflow engine for exploration, planning, coding, and verification. Instead of relying on repeated prompts, configure project rules, tool access, and context boundaries up front. The core workflow includes CLAUDE.md, Plan Mode, common CLI commands, Skills, MCP, Hooks, SubAgents, and context window … Read more

C++ LLM Chat System Design: Model Management, Session Management, and SQLite Persistence

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[AI Readability Summary] This article focuses on three core pillars of a C++ LLM chat SDK: model management, session management, and SQLite persistence. It addresses common challenges such as integrating multiple models through one interface, preserving multi-turn context, and preventing chat history loss after shutdown. It also presents practical data structures and interface designs you … Read more

Bluetooth HID Protocol Explained: Virtual Cable, Report Mechanisms, and Wireless Human Interface Design

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[AI Readability Summary] The Bluetooth HID profile is the standard transport framework for wireless human interface devices. It enables keyboards, mice, game controllers, and similar peripherals to communicate reliably with hosts while balancing compatibility, low latency, and power efficiency. Keywords: Bluetooth HID, Virtual Cable, Report Descriptor. Technical Specification Snapshot Parameter Details Protocol Name Bluetooth HID … Read more

Claude Opus 4.7 Access in China: DeepSider Plugin Setup, Capability Upgrades, and Best-Fit Use Cases

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Claude Opus 4.7 is now Anthropic’s new flagship model, with major gains in coding, visual understanding, and long-task stability. This article distills its key upgrades, cost implications, and access path in China, and explains how DeepSider enables a plugin-based workflow. Keywords: Claude Opus 4.7, DeepSider, AI coding. The technical specification snapshot highlights the essentials Parameter … Read more

Flutter Desktop Multi-Window Native Handle Support: Windows, macOS, and Linux Enter a New Extensible Phase

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The latest milestone in Flutter desktop multi-window support is that WindowController now publicly exposes the underlying native window handle. Developers can directly bridge to Win32, NSWindow, and GTK capabilities without relying on hacks to retrieve handles. The core value is clear: stronger support for custom title bars, native event handling, and platform-specific desktop extensions. Keywords: … Read more

ROS TF Transform Tutorial: Build Turtle Following and Custom Frames with turtlesim

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Technical Specification Snapshot Parameter Details Runtime Environment Ubuntu 18.04/20.04 ROS Version Melodic / Noetic Primary Language C++ Communication / Mechanisms Topic, Service, TF Core Dependencies roscpp, tf, geometry_msgs, turtlesim, std_msgs Example Nodes turtle_broadcaster, turtle_listener, turtle_tf Applicable Scenarios Robot frame management, target following, virtual reference frames Star Count Not provided in the source content TF is … Read more

Best Linux PDF Editors in 2026: 11 Open Source, Free, and Self-Hosted Tools Compared

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[AI Readability Summary] This guide helps Linux users choose the right PDF tool by comparing 11 mainstream editors and processors. It addresses common pain points such as limited native editing, fragmented annotation features, and the tradeoff between OCR convenience and privacy. Keywords: Linux PDF editor, OCR, self-hosted. Technical specifications are easy to scan Parameter Details … Read more

FastAPI Request, Response, Middleware, and Dependency Injection Explained: A Complete Practical Guide

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[AI Readability Summary] This article walks through the four core components in the FastAPI request lifecycle: Request, Response, middleware, and the dependency system. It addresses common problems such as fragmented parameter handling, inconsistent responses, duplicated cross-cutting logic, and poor reuse of shared parameters. Keywords: FastAPI, Dependency Injection, Middleware. Technical Snapshot Parameter Description Language Python Web … Read more

SelectDB search() in Practice: Unifying Log Search and Analytics with a Single SQL Query

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SelectDB search() in Practice: Unifying Log Search and Analytics with a Single SQL Query SelectDB embeds full-text search directly into SQL through search(), solving the long-standing split between search and analytics in log systems. It is compatible with Elasticsearch query_string, supports BM25, multi-field search, nested retrieval, and unified query-tree evaluation, making it well suited for … Read more