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HOW EXCEL IS USED IN REAL WORLD DATA ANALYSIS
Introduction Excel is a spreadsheet application developed by Microsoft that helps users organize, analyze and visualize data. It is used by businesses, organizations, researchers and students worldwide because it makes working with data easier and more efficient. Business Decision Making One of the ways Excel is used in real-world data analysis is in supporting business decision-making. Companies collect data such as customer information, financial transactions and sales records. Excel helps in organizing and analyzing this data using tools such as formulas and PivotTables. This makes it easier to identify trends and patterns in business performance, such as which products to stock and when to restock them. For example, a supermarket can analyze the monthly sales in Excel to identify the best-selling products and ensure that they remain in stock. Marketing Performance Excel is also used to analyze marketing performance. Businesses use it to track data from marketing campaigns such as website visits, social media engagement and sales conversions. This information is organized using charts and reports, which help evaluate which strategies are producing the best results. This allows companies to allocate their resources more effectively and improve future campaigns based on data rather than assumptions. As a result, Excel plays an important role in helping businesses understand their customers and improve the effectiveness of their marketing efforts. Financial Reporting Excel is widely used in financial reporting. It helps businesses to organize and analyze financial statements such as income statements, cash flow reports and balance sheets. It is also used to record transactions, calculate totals, and generate summaries that show the financial health of the business. By using built-in formulas and functions, accountants can quickly compute profits, expenses, taxes and forecasts with a high level of accuracy. Excel also allows the creation of financial charts and dashb
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Show DEV: AIPDFKit -> Free AI-Powered PDF Tools for Developers (No Account Needed)
I built AIPDFKit because I kept running into the same friction: needing to do something simple with a PDF -- redact some sensitive info, pull out a table, or convert a document to Markdown -- and every tool either required an account, put the good stuff behind a paywall, or made me wonder what was happening to my files afterward. PDFKit is my answer to that. PDFKit -- Free AI-Powered PDF Tools PDFKit is a free, browser-based PDF utility suite powered by AI, built for developers and technical professionals who need fast, reliable document processing without the friction of paid plans or mandatory accounts. Whether you're parsing data out of PDFs, sanitizing sensitive information, or converting documents into developer-friendly formats, PDFKit gets the job done in seconds. What it does AI-assisted PII redaction -- automatically detect and mask emails, phone numbers, names, and more Table extraction to Excel -- pull structured data out of PDFs without copying and pasting PDF to Markdown conversion -- especially useful for feeding document content into LLMs or RAG pipelines These aren't just format converters. The AI layer means the output is clean, structured, and actually ready to use. Privacy first No account creation required. PDFKit stores no user data and automatically deletes all uploaded files after one hour. For developers handling client documents or sensitive data pipelines, this is a meaningful differentiator over SaaS tools that retain files indefinitely. Who it's for Developers preprocessing PDFs before feeding them into RAG pipelines Anyone automating document workflows People who need to quickly extract structured data without spinning up a Python script Anyone dealing with sensitive documents who can't afford to have files sitting on someone else's servers It's the kind of utility you bookmark and reach for constantly. Built to be fast, free, and frictionless. Check it out: https://www.aipdfkit.com/ Would love to hear what features you'd find most usefu
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Stride
The AI workspace that plans, designs and ships with you. Discussion | Link
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The Best 3-in-1 Apple Charging Stations After Testing Top Models
I tried all the top models to find the best 3-in-1 Apple charging stations, pads, and more. Keep your iPhone, Apple Watch, and AirPods topped up with these WIRED-tested docking systems.
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2 Best Bluetooth Trackers of 2026, Plus Honorable Mentions
These are the best Bluetooth, Wi-Fi, GPS, and cellular gadgets to ensure you never lose anything ever again.
科技前沿
Velotric Nomad 2 Fat Tire Ebike, Tested and Reviewed (2026)
This wide-tired bike rolls comfortably over dirt, gravel, and whatever curbs you happen to bounce down.
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5 Principles of Survival for Software Engineers
5 Principles of Survival for Software Engineers Adapted from Leon Business School's "5 Principles of Survival" Your stack won’t save you. Your principles will. In the wild, survival isn’t about having the best gear. In software, survival isn’t about having the absolute best framework. It’s about how you operate when production is on fire, the roadmap shifts overnight, and AI just turned your "moat" into a weekend hobby project. Here are 5 core principles that keep you alive in modern software engineering. 1. 🔥 Adapt or Perish Change is not optional; it is the price of survival. In the wild: The species that cannot adapt to winter dies. In software: The team that cannot adapt to change dies slowly at first, then all at once. "Localhost is for amateurs" used to be a strongly held belief. Now, Claude writes a full CRUD API in 30 seconds on localhost . "We’re a React shop" was a proud identity. Now, HTMX ships the same feature before your Webpack build even finishes. Your identity as an engineer cannot be tied to a specific tool. Your identity is solving problems . The syntax is temporary. Agreement on what to build is what actually matters. 🛠️ Survival Action Every quarter, deliberately kill one "we’ve always done it this way" rule in your workflow. 2. 🧭 Stay Calm Under Pressure Panic is the first casualty of poor preparation. In the wild: Panic burns critical calories and gets you lost. In software: Panic causes a git push --force to main on a Friday at 4:59 PM. Outages don’t kill companies. Panicked responses do. The team that has clear runbooks, relies on feature flags, and can execute a rollback in under 90 seconds stays calm. Why? Because they prepared when it was quiet. If your first step in incident response is opening X (Twitter) or complaining in a public Slack channel, you have already lost. 🛠️ Survival Action If you don't have a tested rollback plan, you don't have a deployment plan. Write it down before your next release. 3. 💡 Resourcefulness Over Resources
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peektea brews on WSL 👀🍵 (and installs in one line)
Hello, I'm Maneshwar. I'm building git-lrc, a Micro AI code reviewer that runs on every commit. It is...
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How I Learned Excel in My First Week Of Data Science - Real-World Uses Explained
When I started learning Data Science, I expected to spend my first week writing Python code, exploring machine learning models, and working with advanced tools. Instead, I spent most of my time in Excel. At first, it felt underwhelming—just rows, columns, and simple spreadsheets. But within a few days, I realized something important: Excel is not a basic tool at all. It is one of the most widely used tools in data analysis, business decision-making, and reporting. 📊 Real-World Uses of Excel Excel is widely used across industries for handling and analyzing data. Some of the most common uses include: Business Analysis - Tracking sales and identifying trend Accounting and Budgeting - Managing Expenses, Profits and Financial reports Marketing Analysis - Measuring campaigns performance and customer behavior Data Entry and Management - organizing large datasets efficiently Businesses rely on Excel because it helps turn raw data into meaningful insights for decision making. 🛠️ Key Excel Features I Learned In my first week, I explored several important Excel Features that help with data organization and analysis: Excel Interface Overview - I first explored how Excel is organized, including Ribbon, Worksheets, Cell, Row, Columns, and formula bar. this helped me understand how to navigate the tool before working with data Data Sorting - Organizing data by numbers, Text and Dates Filtering - Showing only relevant data based on condition Data Validation - Ensuring accurate and consistent data entry Freeze Panes - Keeping header Visible while scrolling through large datasets. These features make working with data much easier, faster and more structured. 🧮 Basic Excel Functions I learned I was also introduced to some basic Excel functions used in Data Analysis. Aggregate Functions - SUM - Add all values in a range - AVERAGE - Calculate the mean of a dataset - COUNT - Counts numerical entries in a dataset Conditional Functions - SUMIF () and SUMIFS()** - Add values that meets one
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How to Choose Tech Decisions That Serve You (And the "This Must Be False" Rule)
Inspired by Nir Eyal's "beliefs are tools" framework Beliefs are tools, not truths. Tech stacks are too. Pick the ones that work for you. Most "tech debt" is actually "belief debt". We hold onto frameworks, patterns, and processes long after they stop serving the product. To build great software, we need to introduce a core rule: If a tech belief or "best practice" doesn’t solve a real problem for you right now, it must be treated as false. Here is how to audit your tech beliefs using 5 filters. 1. ARE THEY USEFUL? The real question isn’t "Is this the best tech?" It’s "Does this serve the user?" Tools are tools. Keep the ones that ship. Bad belief (Treat as False): "We need Kubernetes because it’s the industry standard." Useful belief (True for Now): "A $5 VPS serves 10k users. We’ll use K8s when we have a scaling problem, not a resume problem." If your architecture choice doesn’t make the core loop faster, cheaper, or simpler for users, it’s not serving you. Delete it. 2. ARE THEY TESTED? A useful stack holds up when the world pushes back. Pay attention to production, not the trending blog posts. Bad belief (Treat as False): "Microservices are inherently more scalable"—said before you even have 2 concurrent users. Tested belief (True for Now): "Our monolith handles 50 req/s perfectly. We’ll split services only when latency exceeds 300ms in prod." Load test it. Dogfood it. If it only works in a conference slide deck, it’s a story, not a tool. 3. ARE THEY OPEN? A tech choice you can’t change has stopped being a tool and has become a cage. Hold opinions firmly, but hold implementations loosely. Bad belief (Treat as False): "We’re a React shop forever." Open belief (True for Now): "React serves us today. If HTMX lets us ship this feature in 2 days instead of 2 weeks, we’ll use HTMX." In a famous study on hope, Curt Richter’s rats swam for 60 hours when they believed rescue was coming. Your team will grind for years on a legacy stack if they believe it can actually be r
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TypingMind
Pay per use, no subscription, 18 model providers supported Discussion | Link
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What Nobody Tells You About Learning to Code in the Age of AI
Six months ago, I sat down with a YouTube playlist, a blank notebook, and one goal: learn Python. What I did not expect was how hard it would be, not the Python itself, but figuring out how to actually learn it. I started with a YouTube playlist. Simple enough. Except nobody tells you what to do after you watch a video. Do you rewatch it? Take notes? Jump straight to code? I had no system. I'd watch a concept, feel like I understood it, open VS Code, and stare at a blank file. That's when I realized I had fallen into passive learning. And passive learning in the age of AI is a particularly dangerous trap, because it's so easy to confuse activity with progress. I could watch a video, feel good. I could ask Claude to explain a concept, feel good. I could even ask AI to write code, read it, nod along, and feel like I'd learned something. I hadn't. I'd just consumed. There's a difference. The real moment of honesty came when I was stuck on a coding problem. My instinct, everyone's instinct now is to open ChatGPT or Claude immediately. And I knew, sitting there with the cursor blinking, that if I did that every single time I got stuck, I was building nothing. My brain would never develop the muscle of working through problems. I would be someone who can prompt AI to code, not someone who can think in code. And in a world where AI can already write decent code, the person who can't think independently isn't valuable. They're replaceable. So I had to build a system that forced me to actually learn. After a lot of trial and failure, I landed on a 5-phase checklist that I wrote out by hand and kept next to my laptop. Phase 1: is what I call First Contact — watch one focused video, then write a summary purely from memory, then discuss it with an LLM not to get answers but to pressure-test what I thought I understood. Phase 2: is Deep Understanding — read a written source, write proper notes, map the concept visually, and list every edge case and exception I can find. Phase 3:
开发者
Incorruptible by Eric Ries
Why good companies go bad and how great companies stay great Discussion | Link
产品设计
TrakMac
Voice-first macro tracking for fitness enthusiasts Discussion | Link
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Building an AI Short Video Generator: Why the Workflow Needs Skills, Not Just Prompts
Most AI short-form video demos skip the boring part. They show a finished TikTok, Reel, or YouTube Short. Maybe they show the prompt. Maybe they show the generated script or the final render. But the hard part is not making one video. The hard part is making the fifteenth video without the whole system turning into a pile of one-off scripts, half-remembered FFmpeg commands, broken captions, inconsistent hooks, and manual upload steps. That is where I think the conversation around AI video automation gets more interesting. Not: Can an AI generate a Short? But: What workflow does an AI agent need to generate Shorts repeatedly? I was looking at a Terminal Skills use case for building an AI short video generator, and the useful part is not the fantasy of "push one button, print infinite content." The useful part is the stack. The real job is a pipeline A short-form video generator sounds like one tool. In practice, it is a pipeline: topic research -> script -> voiceover -> footage or visual generation -> subtitles -> assembly -> platform formatting -> upload -> analytics Each step has different failure modes. Topic research can produce generic ideas. Scripts can be too long. Voice can drift from the brand. Footage can mismatch the narration. Subtitles can land under platform UI. FFmpeg can export a technically valid file that a platform still hates. Uploads can succeed in the API but fail the actual publishing workflow. If you try to solve all of that with one giant prompt, the agent has to keep too much operational knowledge in its head. That is fragile. The better pattern is to split the workflow into skills. What a skill gives the agent A skill is not just a code snippet. For this kind of workflow, a useful skill tells the agent: when to use this capability what inputs are expected what output should exist afterward what validation is required when to stop instead of pretending success That last point matters. For media automation, "the command ran" is not enough. Th
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Toyo
Exec assistant who lives in iMessage and calls your phone Discussion | Link
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Daemons by Charlie Labs
Keep PRs, issues, CI, and docs moving with AI agents Discussion | Link
产品设计
QWERTYS
My keyboard fell apart. Now it's your problem. Discussion | Link
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From an Abandoned To-Do App to a Smart Productivity Engine: Upgrading Taskr into Solomon's Taskr
What I Built : ( https://github.com/Sai-Emani25/Solomon-s-Taskr ) I transformed my initial, bare-bones task management application, Taskr, into Solomon's Taskr—a significantly smarter, more robust productivity platform. The original project started as a standard way to log to-dos, but it lacked the intelligence to actually help manage time or prioritize effectively. With Solomon's Taskr, I wanted to build a system that doesn't just store data, but actively assists the user. Building this project means a lot to me because it represents a leap from writing basic applications to architecting intelligent, dynamic systems that solve real-world workflow bottlenecks. Demo Link to Final Repository: https://github.com/Sai-Emani25/Solomon-s-Taskr Link to Original Repository: https://github.com/Sai-Emani25/Taskr (Here is a quick walkthrough of Solomon's Taskr in action!) The Comeback Story The original Taskr project had been sitting in my repositories, unfinished and gathering dust. It was a classic case of starting a project with good intentions but abandoning it once the basic structure was complete. It could create, read, update, and delete tasks, but that was it. For the Finish-Up-A-Thon, I decided to completely resurrect and overhaul it. Here are the key changes and implementations that turned it into Solomon's Taskr: Complete Codebase Refactoring: I stripped down the old, inefficient logic and rebuilt the architecture to be highly scalable and maintainable. Intelligent Prioritization ("The Solomon Touch"): I integrated smart features to help organize and prioritize tasks rather than just listing them chronologically. (Note: If you integrated Gemini API or LLMs here for smart tagging, explicitly mention it!) Enhanced UI/UX: I moved away from the clunky, basic interface of the original Taskr and implemented a clean, responsive dashboard that provides a real-time overview of pending and completed tasks. Optimized Data Handling: I refined how the application processes and st
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Why I stopped reading "Old vs New" posts
Why I stopped reading "❌ Old vs ✅ New" posts I used to scroll past them. Then I started ignoring them. Now? I don't read them at all. Not because they're "wrong". But because they're incomplete . The problem with "❌ Old vs ✅ New" These posts make everything look easy: One error One fix One clean "New Way" Three bullet points Save the post Done. Right? No. What these posts don't show you 🔹 The 200 failed deployments before that one working fix 🔹 The 300+ errors you solve along the way — not just one 🔹 The Vercel pipelines that break for no documented reason 🔹 The "New Way" that also fails in production 🔹 The gap between documentation and reality What happens in production That clean "New Way" code snippet? It might work on your local machine. But in production, with real traffic, real data, real edge cases? It can fail. Hard. And no three-line post prepares you for that. Why I stopped reading Because these posts teach me solutions to problems I don't have yet . But they don't teach me how to think when nothing works. They don't teach me: How to read error logs properly How to trace a pipeline failure across services How to stay consistent after multiple failed deploys How to know when the "New Way" is actually worse What actually helped me Not templates. Not shortcuts. Real experience: 200+ failed deployments 300+ errors solved (one by one) Broken pipelines fixed by understanding, not copy-paste Production live — not a "demo" or a "tutorial" This is not a "❌ vs ✅" post I'm not giving you a "Here's the fix". Because the real fix isn't three lines of code. It's patience. It's persistence. It's failing and getting back up. And no post can save that to your bookmarks. 👇 Have you ever followed a "New Way" post and had it fail in production?