Blog

Aug 13, 2026 30 min read Advanced

Building Rust APIs with Actix Web: Extractors, Middleware Order, WebSocket and sqlx

Structuring Actix Web APIs: App and Scope routing, typed extractors, middleware order with wrap, WebSocket and SSE endpoints, and sqlx pools via web::Data.
Aug 4, 2026 15 min read Beginner

Cursor vs Copilot vs Claude Code vs Windsurf vs Aider: How the AI Coding Tools Differ

A comparison of top AI coding assistants in 2026, covering code completion quality, context handling, and pricing.
Jul 19, 2026 26 min read Beginner

Prompt Engineering for Developers: Few-Shot, Chain-of-Thought and Constraint Prompts for Code

Get usable code out of ChatGPT, Claude and Cursor with few-shot, chain-of-thought, role and constraint prompts, plus fixes for context loss and bloated output.
Jul 19, 2026 16 min read Beginner

AI Vibe Coding with Cursor and Copilot: Prompts, Workflows and Where It Goes Wrong

Code by conversation with Cursor, Copilot and Claude: prompt patterns, workflows for new projects and bug fixes, and how to catch wrong or insecure AI output.
May 24, 2026 16 min read Intermediate

Algorithm Optimization Case Studies

Real-world case studies of solving TLE in competitive programming. Learn optimization techniques to improve from O(n²) to O(n log n), and O(n³) to O(n).
May 24, 2026 13 min read Beginner

BFS vs DFS: How Each Works, Complexity and Which to Use for Which Problem

Compare BFS and DFS from the perspective of working principles, time complexity, and space complexity.
May 24, 2026 17 min read Beginner

Arrays vs Linked Lists for Coding Interviews: Access Costs, Two Pointers and Common Traps

Arrays and linked lists for coding interviews: how their time complexities differ, the two-pointer and prefix-sum techniques that show up most, and practice problems by difficulty.
May 24, 2026 22 min read Beginner

Stacks and Queues in Interviews: LIFO/FIFO Patterns, Monotonic Stacks and Deques

Stacks and queues for coding interviews: LIFO and FIFO behavior, the problem patterns they solve (bracket matching, BFS, monotonic stacks), and the mistakes that cost points.
May 25, 2026 26 min read Intermediate

Hash Tables and Python dict: Hash Functions, Collisions and Why O(1) Is Only Average

Hash tables for coding interviews: how hash functions and collision resolution work, using Python dict and collections effectively, and the mistakes that turn O(1) lookups slow.
May 25, 2026 18 min read Intermediate

Binary Trees and BSTs: Traversals, Recursion Depth, Validation and Serialization

Binary trees for interviews: why the BST property covers whole subtrees, skewed trees and RecursionError, iterative traversals, level order, and serialization.