Harper Tech Lab

Harper Tech Lab https://harpertechlab.co.uk Built, documented, and shipped. AI tools, automation, and web projects by Kieron Harper. en-gb <![CDATA[Day 100: Done]]> https://harpertechlab.co.uk/blog/100-days-day-100-done/ https://harpertechlab.co.uk/blog/100-days-day-100-done/ Mon, 24 Aug 2026 00:00:00 GMT <![CDATA[Day 99: The Second-to-Last Post]]> https://harpertechlab.co.uk/blog/100-days-day-99-penultimate/ https://harpertechlab.co.uk/blog/100-days-day-99-penultimate/ Sun, 23 Aug 2026 00:00:00 GMT <![CDATA[Day 98: Staying Sharp Over the Long Term]]> https://harpertechlab.co.uk/blog/100-days-day-98-developer-burnout-prevention/ https://harpertechlab.co.uk/blog/100-days-day-98-developer-burnout-prevention/ Sat, 22 Aug 2026 00:00:00 GMT <![CDATA[Day 97: Consistency Over Intensity — The Evidence]]> https://harpertechlab.co.uk/blog/100-days-day-97-consistency-over-intensity-2/ https://harpertechlab.co.uk/blog/100-days-day-97-consistency-over-intensity-2/ Fri, 21 Aug 2026 00:00:00 GMT <![CDATA[Day 96: Building Things That Matter]]> https://harpertechlab.co.uk/blog/100-days-day-96-building-things-that-matter/ https://harpertechlab.co.uk/blog/100-days-day-96-building-things-that-matter/ Thu, 20 Aug 2026 00:00:00 GMT <![CDATA[Day 95: What I'd Tell Myself Starting Out]]> https://harpertechlab.co.uk/blog/100-days-day-95-what-id-tell-myself/ https://harpertechlab.co.uk/blog/100-days-day-95-what-id-tell-myself/ Wed, 19 Aug 2026 00:00:00 GMT <![CDATA[Day 94: Looking Back at Day One]]> https://harpertechlab.co.uk/blog/100-days-day-94-looking-back-at-day-1/ https://harpertechlab.co.uk/blog/100-days-day-94-looking-back-at-day-1/ Tue, 18 Aug 2026 00:00:00 GMT <![CDATA[Day 93: The 10,000 Hours Myth and What Actually Builds Expertise]]> https://harpertechlab.co.uk/blog/100-days-day-93-10000-hours/ https://harpertechlab.co.uk/blog/100-days-day-93-10000-hours/ Mon, 17 Aug 2026 00:00:00 GMT <![CDATA[Day 92: Developer Burnout — What It Actually Is and How to Avoid It]]> https://harpertechlab.co.uk/blog/100-days-day-92-developer-burnout/ https://harpertechlab.co.uk/blog/100-days-day-92-developer-burnout/ Sun, 16 Aug 2026 00:00:00 GMT <![CDATA[Day 91: What Makes a Good Portfolio Project]]> https://harpertechlab.co.uk/blog/100-days-day-91-good-portfolio-project/ https://harpertechlab.co.uk/blog/100-days-day-91-good-portfolio-project/ Sat, 15 Aug 2026 00:00:00 GMT <![CDATA[Day 90: Small, Focused Tools]]> https://harpertechlab.co.uk/blog/100-days-day-90-small-focused-tools/ https://harpertechlab.co.uk/blog/100-days-day-90-small-focused-tools/ Fri, 14 Aug 2026 00:00:00 GMT <![CDATA[Day 89: Reading Source Code as a Learning Strategy]]> https://harpertechlab.co.uk/blog/100-days-day-89-reading-source-code/ https://harpertechlab.co.uk/blog/100-days-day-89-reading-source-code/ Thu, 13 Aug 2026 00:00:00 GMT <![CDATA[Day 88: Ten Days to Go]]> https://harpertechlab.co.uk/blog/100-days-day-88-ten-days-to-go/ https://harpertechlab.co.uk/blog/100-days-day-88-ten-days-to-go/ Wed, 12 Aug 2026 00:00:00 GMT <![CDATA[Day 87: Staying Organised as a Developer]]> https://harpertechlab.co.uk/blog/100-days-day-87-staying-organised/ https://harpertechlab.co.uk/blog/100-days-day-87-staying-organised/ Tue, 11 Aug 2026 00:00:00 GMT <![CDATA[Day 86: AI and the Future of Software Development]]> https://harpertechlab.co.uk/blog/100-days-day-86-ai-and-software-future/ https://harpertechlab.co.uk/blog/100-days-day-86-ai-and-software-future/ Mon, 10 Aug 2026 00:00:00 GMT <![CDATA[Day 85: Python for Web Developers — What You Need to Know]]> https://harpertechlab.co.uk/blog/100-days-day-85-python-for-web-devs/ https://harpertechlab.co.uk/blog/100-days-day-85-python-for-web-devs/ Sun, 09 Aug 2026 00:00:00 GMT <![CDATA[Day 84: Shipping Side Projects — The Part Nobody Talks About]]> https://harpertechlab.co.uk/blog/100-days-day-84-shipping-side-projects/ https://harpertechlab.co.uk/blog/100-days-day-84-shipping-side-projects/ Sat, 08 Aug 2026 00:00:00 GMT <![CDATA[Day 83: Fine-Tuning vs Prompting — When Each Is Right]]> https://harpertechlab.co.uk/blog/100-days-day-83-finetuning-vs-prompting/ https://harpertechlab.co.uk/blog/100-days-day-83-finetuning-vs-prompting/ Fri, 07 Aug 2026 00:00:00 GMT <![CDATA[Day 82: Git Branching Strategies That Work]]> https://harpertechlab.co.uk/blog/100-days-day-82-git-branches/ https://harpertechlab.co.uk/blog/100-days-day-82-git-branches/ Thu, 06 Aug 2026 00:00:00 GMT <![CDATA[Day 81: Getting Consistent Results from LLM Prompts]]> https://harpertechlab.co.uk/blog/100-days-day-81-consistent-prompt-results/ https://harpertechlab.co.uk/blog/100-days-day-81-consistent-prompt-results/ Wed, 05 Aug 2026 00:00:00 GMT <![CDATA[Day 80: Building in Public — What I've Learned]]> https://harpertechlab.co.uk/blog/100-days-day-80-building-in-public/ https://harpertechlab.co.uk/blog/100-days-day-80-building-in-public/ Tue, 04 Aug 2026 00:00:00 GMT <![CDATA[Day 79: Python Standard Library Gems You Might Be Missing]]> https://harpertechlab.co.uk/blog/100-days-day-79-python-stdlib/ https://harpertechlab.co.uk/blog/100-days-day-79-python-stdlib/ Mon, 03 Aug 2026 00:00:00 GMT <![CDATA[Day 78: A Portfolio That Shows Work, Not Aspirations]]> https://harpertechlab.co.uk/blog/100-days-day-78-portfolio-that-shows-work/ https://harpertechlab.co.uk/blog/100-days-day-78-portfolio-that-shows-work/ Sun, 02 Aug 2026 00:00:00 GMT <![CDATA[Day 77: Publishing a Python Package]]> https://harpertechlab.co.uk/blog/100-days-day-77-python-packages/ https://harpertechlab.co.uk/blog/100-days-day-77-python-packages/ Sat, 01 Aug 2026 00:00:00 GMT <![CDATA[Day 76: Debugging LLM Prompts — A Systematic Approach]]> https://harpertechlab.co.uk/blog/100-days-day-76-debugging-prompts/ https://harpertechlab.co.uk/blog/100-days-day-76-debugging-prompts/ Fri, 31 Jul 2026 00:00:00 GMT <![CDATA[Day 75: From Junior to Senior — What Actually Changes]]> https://harpertechlab.co.uk/blog/100-days-day-75-junior-to-senior/ https://harpertechlab.co.uk/blog/100-days-day-75-junior-to-senior/ Thu, 30 Jul 2026 00:00:00 GMT <![CDATA[Day 74: Building a Streaming Chatbot UI]]> https://harpertechlab.co.uk/blog/100-days-day-74-streaming-chatbot-ui/ https://harpertechlab.co.uk/blog/100-days-day-74-streaming-chatbot-ui/ Wed, 29 Jul 2026 00:00:00 GMT <![CDATA[Day 73: Three Quarters Done — What I Know Now]]> https://harpertechlab.co.uk/blog/100-days-day-73-three-quarters/ https://harpertechlab.co.uk/blog/100-days-day-73-three-quarters/ Tue, 28 Jul 2026 00:00:00 GMT <![CDATA[Day 72: Writing Documentation People Actually Read]]> https://harpertechlab.co.uk/blog/100-days-day-72-documentation/ https://harpertechlab.co.uk/blog/100-days-day-72-documentation/ Mon, 27 Jul 2026 00:00:00 GMT <![CDATA[Day 71: Keyboard Shortcuts That Made Me Faster]]> https://harpertechlab.co.uk/blog/100-days-day-71-keyboard-shortcuts/ https://harpertechlab.co.uk/blog/100-days-day-71-keyboard-shortcuts/ Sun, 26 Jul 2026 00:00:00 GMT <![CDATA[Day 70: Context Window Management in LLM Applications]]> https://harpertechlab.co.uk/blog/100-days-day-70-context-window-management/ https://harpertechlab.co.uk/blog/100-days-day-70-context-window-management/ Sat, 25 Jul 2026 00:00:00 GMT <![CDATA[Day 69: Python Concurrency — Threads, Processes, and Async]]> https://harpertechlab.co.uk/blog/100-days-day-69-python-concurrency/ https://harpertechlab.co.uk/blog/100-days-day-69-python-concurrency/ Fri, 24 Jul 2026 00:00:00 GMT <![CDATA[Day 68: Consistency Over Intensity]]> https://harpertechlab.co.uk/blog/100-days-day-68-consistency/ https://harpertechlab.co.uk/blog/100-days-day-68-consistency/ Thu, 23 Jul 2026 00:00:00 GMT <![CDATA[Day 67: The Economics of Building with AI APIs]]> https://harpertechlab.co.uk/blog/100-days-day-67-ai-economics/ https://harpertechlab.co.uk/blog/100-days-day-67-ai-economics/ Wed, 22 Jul 2026 00:00:00 GMT <![CDATA[Day 66: Automation That Saves Real Time]]> https://harpertechlab.co.uk/blog/100-days-day-66-automation/ https://harpertechlab.co.uk/blog/100-days-day-66-automation/ Tue, 21 Jul 2026 00:00:00 GMT <![CDATA[Day 65: What I Got Wrong About AI]]> https://harpertechlab.co.uk/blog/100-days-day-65-what-i-got-wrong-about-ai/ https://harpertechlab.co.uk/blog/100-days-day-65-what-i-got-wrong-about-ai/ Mon, 20 Jul 2026 00:00:00 GMT <![CDATA[Day 64: Error Handling in TypeScript — The Patterns That Work]]> https://harpertechlab.co.uk/blog/100-days-day-64-error-handling-typescript/ https://harpertechlab.co.uk/blog/100-days-day-64-error-handling-typescript/ Sun, 19 Jul 2026 00:00:00 GMT <![CDATA[Day 63: Python Decorators — Beyond the Basics]]> https://harpertechlab.co.uk/blog/100-days-day-63-decorators/ https://harpertechlab.co.uk/blog/100-days-day-63-decorators/ Sat, 18 Jul 2026 00:00:00 GMT <![CDATA[Day 62: Building a Personal Knowledge Base with LLMs]]> https://harpertechlab.co.uk/blog/100-days-day-62-knowledge-base/ https://harpertechlab.co.uk/blog/100-days-day-62-knowledge-base/ Fri, 17 Jul 2026 00:00:00 GMT <![CDATA[Day 61: Data Fetching Patterns in Next.js]]> https://harpertechlab.co.uk/blog/100-days-day-61-fetch-patterns/ https://harpertechlab.co.uk/blog/100-days-day-61-fetch-patterns/ Thu, 16 Jul 2026 00:00:00 GMT <![CDATA[Day 60: Writing Python That Others Can Read]]> https://harpertechlab.co.uk/blog/100-days-day-60-readable-python/ https://harpertechlab.co.uk/blog/100-days-day-60-readable-python/ Wed, 15 Jul 2026 00:00:00 GMT <![CDATA[Day 59: Caching LLM Calls — When and How]]> https://harpertechlab.co.uk/blog/100-days-day-59-caching-llm/ https://harpertechlab.co.uk/blog/100-days-day-59-caching-llm/ Tue, 14 Jul 2026 00:00:00 GMT <![CDATA[Day 58: Two Months In — The Shape of the Challenge]]> https://harpertechlab.co.uk/blog/100-days-day-58-two-months/ https://harpertechlab.co.uk/blog/100-days-day-58-two-months/ Mon, 13 Jul 2026 00:00:00 GMT <![CDATA[Day 57: Python subprocess — Running External Commands Properly]]> https://harpertechlab.co.uk/blog/100-days-day-57-python-subprocess/ https://harpertechlab.co.uk/blog/100-days-day-57-python-subprocess/ Sun, 12 Jul 2026 00:00:00 GMT <![CDATA[Day 56: Building a Document Q&A System]]> https://harpertechlab.co.uk/blog/100-days-day-56-document-qa/ https://harpertechlab.co.uk/blog/100-days-day-56-document-qa/ Sat, 11 Jul 2026 00:00:00 GMT <![CDATA[Day 55: TypeScript Features I Wish I'd Learned Earlier]]> https://harpertechlab.co.uk/blog/100-days-day-55-typescript-advanced/ https://harpertechlab.co.uk/blog/100-days-day-55-typescript-advanced/ Fri, 10 Jul 2026 00:00:00 GMT <![CDATA[Day 54: Getting Consistent Structured Outputs from LLMs]]> https://harpertechlab.co.uk/blog/100-days-day-54-structured-outputs/ https://harpertechlab.co.uk/blog/100-days-day-54-structured-outputs/ Thu, 09 Jul 2026 00:00:00 GMT <![CDATA[Day 53: How to Read a Codebase You've Never Seen Before]]> https://harpertechlab.co.uk/blog/100-days-day-53-reading-codebases/ https://harpertechlab.co.uk/blog/100-days-day-53-reading-codebases/ Wed, 08 Jul 2026 00:00:00 GMT <![CDATA[Day 52: CSS Animations That Don't Annoy People]]> https://harpertechlab.co.uk/blog/100-days-day-52-css-animations/ https://harpertechlab.co.uk/blog/100-days-day-52-css-animations/ Tue, 07 Jul 2026 00:00:00 GMT <![CDATA[Day 51: Handling LLM Hallucinations in Production]]> https://harpertechlab.co.uk/blog/100-days-day-51-hallucination/ https://harpertechlab.co.uk/blog/100-days-day-51-hallucination/ Mon, 06 Jul 2026 00:00:00 GMT <![CDATA[Day 50: API Design — Principles That Hold Up]]> https://harpertechlab.co.uk/blog/100-days-day-50-api-design/ https://harpertechlab.co.uk/blog/100-days-day-50-api-design/ Sun, 05 Jul 2026 00:00:00 GMT <![CDATA[Day 49: Python Generators — Lazy Evaluation That Actually Matters]]> https://harpertechlab.co.uk/blog/100-days-day-49-python-generators/ https://harpertechlab.co.uk/blog/100-days-day-49-python-generators/ Sat, 04 Jul 2026 00:00:00 GMT <![CDATA[Day 48: Nearly Halfway — What I Actually Think About This Challenge]]> https://harpertechlab.co.uk/blog/100-days-day-48-halfway/ https://harpertechlab.co.uk/blog/100-days-day-48-halfway/ Fri, 03 Jul 2026 00:00:00 GMT <![CDATA[Day 47: Using LLMs for Code — What Works and What Doesn't]]> https://harpertechlab.co.uk/blog/100-days-day-47-llms-for-code/ https://harpertechlab.co.uk/blog/100-days-day-47-llms-for-code/ Thu, 02 Jul 2026 00:00:00 GMT <![CDATA[Day 46: Building Reusable React Components]]> https://harpertechlab.co.uk/blog/100-days-day-46-reusable-components/ https://harpertechlab.co.uk/blog/100-days-day-46-reusable-components/ Wed, 01 Jul 2026 00:00:00 GMT <![CDATA[Day 45: Python Testing — The Approach That Actually Works]]> https://harpertechlab.co.uk/blog/100-days-day-45-python-testing/ https://harpertechlab.co.uk/blog/100-days-day-45-python-testing/ Tue, 30 Jun 2026 00:00:00 GMT <![CDATA[Day 44: How to Evaluate LLM Outputs]]> https://harpertechlab.co.uk/blog/100-days-day-44-evaluating-llm-outputs/ https://harpertechlab.co.uk/blog/100-days-day-44-evaluating-llm-outputs/ Mon, 29 Jun 2026 00:00:00 GMT <![CDATA[Day 43: Web Accessibility — The Parts That Matter Most]]> https://harpertechlab.co.uk/blog/100-days-day-43-accessibility/ https://harpertechlab.co.uk/blog/100-days-day-43-accessibility/ Sun, 28 Jun 2026 00:00:00 GMT <![CDATA[Day 42: Python Environments — Stop Fighting Them]]> https://harpertechlab.co.uk/blog/100-days-day-42-python-environments/ https://harpertechlab.co.uk/blog/100-days-day-42-python-environments/ Sat, 27 Jun 2026 00:00:00 GMT <![CDATA[Day 41: Multi-Agent Systems — When One LLM Isn't Enough]]> https://harpertechlab.co.uk/blog/100-days-day-41-multi-agent/ https://harpertechlab.co.uk/blog/100-days-day-41-multi-agent/ Fri, 26 Jun 2026 00:00:00 GMT <![CDATA[Day 40: Streaming LLM Responses — Why and How]]> https://harpertechlab.co.uk/blog/100-days-day-40-streaming-llm/ https://harpertechlab.co.uk/blog/100-days-day-40-streaming-llm/ Thu, 25 Jun 2026 00:00:00 GMT <![CDATA[Day 39: Python Logging — Doing It Properly]]> https://harpertechlab.co.uk/blog/100-days-day-39-python-logging/ https://harpertechlab.co.uk/blog/100-days-day-39-python-logging/ Wed, 24 Jun 2026 00:00:00 GMT <![CDATA[Day 38: Deploying Python Applications — What Actually Matters]]> https://harpertechlab.co.uk/blog/100-days-day-38-deploying-python/ https://harpertechlab.co.uk/blog/100-days-day-38-deploying-python/ Tue, 23 Jun 2026 00:00:00 GMT <![CDATA[Day 37: Pydantic — Runtime Validation Done Right]]> https://harpertechlab.co.uk/blog/100-days-day-37-pydantic/ https://harpertechlab.co.uk/blog/100-days-day-37-pydantic/ Mon, 22 Jun 2026 00:00:00 GMT <![CDATA[Day 36: React Hooks — The Ones That Matter]]> https://harpertechlab.co.uk/blog/100-days-day-36-react-hooks/ https://harpertechlab.co.uk/blog/100-days-day-36-react-hooks/ Sun, 21 Jun 2026 00:00:00 GMT <![CDATA[Day 35: Writing System Prompts That Actually Work]]> https://harpertechlab.co.uk/blog/100-days-day-35-system-prompts/ https://harpertechlab.co.uk/blog/100-days-day-35-system-prompts/ Sat, 20 Jun 2026 00:00:00 GMT <![CDATA[Day 34: Python Type Hints — The Features That Actually Matter]]> https://harpertechlab.co.uk/blog/100-days-day-34-python-type-hints/ https://harpertechlab.co.uk/blog/100-days-day-34-python-type-hints/ Fri, 19 Jun 2026 00:00:00 GMT <![CDATA[Day 33: Building a Simple RAG System from Scratch]]> https://harpertechlab.co.uk/blog/100-days-day-33-simple-rag/ https://harpertechlab.co.uk/blog/100-days-day-33-simple-rag/ Thu, 18 Jun 2026 00:00:00 GMT <![CDATA[Day 32: CSS Patterns I Use Every Day]]> https://harpertechlab.co.uk/blog/100-days-day-32-css-patterns/ https://harpertechlab.co.uk/blog/100-days-day-32-css-patterns/ Wed, 17 Jun 2026 00:00:00 GMT <![CDATA[Day 31: Vector Databases — What They Are and When You Need One]]> https://harpertechlab.co.uk/blog/100-days-day-31-vector-databases/ https://harpertechlab.co.uk/blog/100-days-day-31-vector-databases/ Tue, 16 Jun 2026 00:00:00 GMT <![CDATA[Day 30: One Month In — What This Challenge Has Actually Taught Me]]> https://harpertechlab.co.uk/blog/100-days-day-30-one-month/ https://harpertechlab.co.uk/blog/100-days-day-30-one-month/ Mon, 15 Jun 2026 00:00:00 GMT <![CDATA[Day 29: How I Structure Python Projects]]> https://harpertechlab.co.uk/blog/100-days-day-29-python-project-structure/ https://harpertechlab.co.uk/blog/100-days-day-29-python-project-structure/ Sun, 14 Jun 2026 00:00:00 GMT <![CDATA[Day 28: Git Workflows That Actually Work]]> https://harpertechlab.co.uk/blog/100-days-day-28-git-workflows/ https://harpertechlab.co.uk/blog/100-days-day-28-git-workflows/ Sat, 13 Jun 2026 00:00:00 GMT <![CDATA[Day 27: Web Scraping in Python — The Practical Guide]]> https://harpertechlab.co.uk/blog/100-days-day-27-web-scraping/ https://harpertechlab.co.uk/blog/100-days-day-27-web-scraping/ Fri, 12 Jun 2026 00:00:00 GMT <![CDATA[Day 26: Tailwind CSS — Why I Changed My Mind]]> https://harpertechlab.co.uk/blog/100-days-day-26-tailwind-css/ https://harpertechlab.co.uk/blog/100-days-day-26-tailwind-css/ Thu, 11 Jun 2026 00:00:00 GMT <![CDATA[Day 25: One Quarter Through — Honest Reflection]]> https://harpertechlab.co.uk/blog/100-days-day-25-quarter-done/ https://harpertechlab.co.uk/blog/100-days-day-25-quarter-done/ Wed, 10 Jun 2026 00:00:00 GMT <![CDATA[Day 24: Python Dataclasses — Underused and Underrated]]> https://harpertechlab.co.uk/blog/100-days-day-24-python-dataclasses/ https://harpertechlab.co.uk/blog/100-days-day-24-python-dataclasses/ Tue, 09 Jun 2026 00:00:00 GMT <![CDATA[Day 23: Docker for Developers Who Keep Putting It Off]]> https://harpertechlab.co.uk/blog/100-days-day-23-docker-for-developers/ https://harpertechlab.co.uk/blog/100-days-day-23-docker-for-developers/ Mon, 08 Jun 2026 00:00:00 GMT <![CDATA[Day 22: Understanding Tokens — What They Are and What They Cost]]> https://harpertechlab.co.uk/blog/100-days-day-22-understanding-tokens/ https://harpertechlab.co.uk/blog/100-days-day-22-understanding-tokens/ Sun, 07 Jun 2026 00:00:00 GMT <![CDATA[Day 21: Three Weeks In — What's Working and What Isn't]]> https://harpertechlab.co.uk/blog/100-days-day-21-three-weeks-in/ https://harpertechlab.co.uk/blog/100-days-day-21-three-weeks-in/ Sat, 06 Jun 2026 00:00:00 GMT <![CDATA[Day 20: Python asyncio — The Practical Guide]]> https://harpertechlab.co.uk/blog/100-days-day-20-asyncio/ https://harpertechlab.co.uk/blog/100-days-day-20-asyncio/ Fri, 05 Jun 2026 00:00:00 GMT <![CDATA[Day 19: The Anthropic Claude API — Getting Started Properly]]> https://harpertechlab.co.uk/blog/100-days-day-19-anthropic-api/ https://harpertechlab.co.uk/blog/100-days-day-19-anthropic-api/ Thu, 04 Jun 2026 00:00:00 GMT <![CDATA[Day 18: Working with REST APIs in Python]]> https://harpertechlab.co.uk/blog/100-days-day-18-python-apis/ https://harpertechlab.co.uk/blog/100-days-day-18-python-apis/ Wed, 03 Jun 2026 00:00:00 GMT <![CDATA[Day 17: React Server Components — What Actually Changed]]> https://harpertechlab.co.uk/blog/100-days-day-17-react-server-components/ https://harpertechlab.co.uk/blog/100-days-day-17-react-server-components/ Tue, 02 Jun 2026 00:00:00 GMT <![CDATA[Day 16: TypeScript for Python Developers]]> https://harpertechlab.co.uk/blog/100-days-day-16-typescript-for-python-devs/ https://harpertechlab.co.uk/blog/100-days-day-16-typescript-for-python-devs/ Mon, 01 Jun 2026 00:00:00 GMT <![CDATA[Day 15: Python f-strings — The Tricks Most People Skip]]> https://harpertechlab.co.uk/blog/100-days-day-15-python-fstrings/ https://harpertechlab.co.uk/blog/100-days-day-15-python-fstrings/ Sun, 31 May 2026 00:00:00 GMT <![CDATA[Day 14: Two Weeks In — Keeping the Streak Alive]]> https://harpertechlab.co.uk/blog/100-days-day-14-two-weeks-in/ https://harpertechlab.co.uk/blog/100-days-day-14-two-weeks-in/ Sat, 30 May 2026 00:00:00 GMT <![CDATA[Day 13: Building CLI Tools with Python Click]]> https://harpertechlab.co.uk/blog/100-days-day-13-python-click-cli/ https://harpertechlab.co.uk/blog/100-days-day-13-python-click-cli/ Fri, 29 May 2026 00:00:00 GMT <![CDATA[Day 12: When NOT to Use AI in Your Code]]> https://harpertechlab.co.uk/blog/100-days-day-12-when-not-to-use-ai/ https://harpertechlab.co.uk/blog/100-days-day-12-when-not-to-use-ai/ Thu, 28 May 2026 00:00:00 GMT <![CDATA[Day 11: RAG vs Fine-tuning — What's the Difference and When Does Each Make Sense?]]> https://harpertechlab.co.uk/blog/100-days-day-11-rag-vs-finetuning/ https://harpertechlab.co.uk/blog/100-days-day-11-rag-vs-finetuning/ Wed, 27 May 2026 00:00:00 GMT <![CDATA[Day 10: Prompt Engineering — A Practical Framework]]> https://harpertechlab.co.uk/blog/100-days-day-10-prompt-engineering/ https://harpertechlab.co.uk/blog/100-days-day-10-prompt-engineering/ Tue, 26 May 2026 00:00:00 GMT <![CDATA[Day 9: How Context Windows Actually Work]]> https://harpertechlab.co.uk/blog/100-days-day-9-context-windows/ https://harpertechlab.co.uk/blog/100-days-day-9-context-windows/ Mon, 25 May 2026 00:00:00 GMT <![CDATA[Day 8: Running Ollama for the First Time]]> https://harpertechlab.co.uk/blog/100-days-day-8-ollama/ https://harpertechlab.co.uk/blog/100-days-day-8-ollama/ Sun, 24 May 2026 00:00:00 GMT <![CDATA[Day 7: Week One Done]]> https://harpertechlab.co.uk/blog/100-days-day-7-week-one-done/ https://harpertechlab.co.uk/blog/100-days-day-7-week-one-done/ Sat, 23 May 2026 00:00:00 GMT <![CDATA[Day 6: What 'Local AI' Actually Means]]> https://harpertechlab.co.uk/blog/100-days-day-6-what-local-ai-means/ https://harpertechlab.co.uk/blog/100-days-day-6-what-local-ai-means/ Fri, 22 May 2026 00:00:00 GMT <![CDATA[Day 5: Setting Up Python Properly]]> https://harpertechlab.co.uk/blog/100-days-day-5-python-setup/ https://harpertechlab.co.uk/blog/100-days-day-5-python-setup/ Thu, 21 May 2026 00:00:00 GMT <![CDATA[Day 4: Why I Use Next.js for Almost Everything]]> https://harpertechlab.co.uk/blog/100-days-day-4-why-nextjs/ https://harpertechlab.co.uk/blog/100-days-day-4-why-nextjs/ Wed, 20 May 2026 00:00:00 GMT <![CDATA[Day 3: The AI Tools I Actually Use Every Day]]> https://harpertechlab.co.uk/blog/100-days-day-3-ai-tools-i-actually-use/ https://harpertechlab.co.uk/blog/100-days-day-3-ai-tools-i-actually-use/ Tue, 19 May 2026 00:00:00 GMT <![CDATA[Day 2: My Development Setup in 2026]]> https://harpertechlab.co.uk/blog/100-days-day-2-my-dev-setup/ https://harpertechlab.co.uk/blog/100-days-day-2-my-dev-setup/ Mon, 18 May 2026 00:00:00 GMT <![CDATA[Day 1: I'm Doing the 100 Days of Blogging Challenge]]> https://harpertechlab.co.uk/blog/100-days-day-1-starting-the-challenge/ https://harpertechlab.co.uk/blog/100-days-day-1-starting-the-challenge/ Sun, 17 May 2026 00:00:00 GMT <![CDATA[I built a NASA space explorer with Python and a local AI]]> https://harpertechlab.co.uk/blog/building-a-nasa-space-explorer/ https://harpertechlab.co.uk/blog/building-a-nasa-space-explorer/ Sun, 17 May 2026 00:00:00 GMT <![CDATA[I Built a Local AI Dungeon Master That Runs on Your Laptop]]> https://harpertechlab.co.uk/blog/building-an-ai-game-master/ https://harpertechlab.co.uk/blog/building-an-ai-game-master/ Mon, 11 May 2026 00:00:00 GMT <![CDATA[I Built an AI Interview Coach That Runs on Your Laptop]]> https://harpertechlab.co.uk/blog/building-an-ai-interview-coach/ https://harpertechlab.co.uk/blog/building-an-ai-interview-coach/ Mon, 11 May 2026 00:00:00 GMT