Posts | In Pursuit of Simplicity
In Pursuit of Hubris| In Pursuit of Simplicity
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中文版本 1 Preface I spent a weekend building a Telegram spam blocker bot based on Bayesian Algorithm @BayesSpamSniperBot (https://t.me/BayesSpamSniperBot). The project is open-sourced at: https://github.com/ramsayleung/bayes_spam_sniper 1.1 Telegram Telegram is a popular instant messaging application, similar to Snapchat and WhatsApp, with over 1 billion users. It supports many powerful features like cloud chat history storage, clients for Linux, Mac, Windows, Android, IOS, and Web (all ...| Posts on In Pursuit of Simplicity
中文版本 1 Preface Malcolm Gladwell’s “10,000-hour rule” suggests that continuous investment of 10,000 hours of effort is sufficient to reach expert level in any field. Based on 20 hours of practice per week, this requires about 3 hours of daily investment, taking roughly ten years to achieve this goal. Since I wrote my first line of C code, more than ten years have passed. During this period, I have written over 300,000 lines of code, some of which, written at WeChat, have served m...| Posts on In Pursuit of Simplicity
Developers usually use git blame in GUI tools like GitHub Blame or using GitLens blame in VSCode: Even though GUI tools is intuitive, but the Git CLI has much more powerful tooling for finding something closer to the real story behind your code. There are many scenarios that CLI is valuable, the first is ignoring the whitespace changes. For example, if you formatted your C++ codebase with clang-format or Javascript codebase with prettier, you haven’t actually changed the codebase, but you...| Posts on In Pursuit of Simplicity
Every Git user will have probably been asked to set up their Git at the first time: 1 2 git config --global user.name "Ramsay Leung"git config --global user.email ramsayleung@gmail.com The above command will simply add the user.name and user.email value into your ~/.gitconfig file 1 2 3 4 5 6 7 8 > cat ~/.gitconfig [user]name= Ramsay Leung email= ramsayleung@gmail.com [core]quotepath=false[init]defaultBranch= master You could also specify --local argument to writes the config values to .git/c...| Posts on In Pursuit of Simplicity
1 Goodbye 2023 As I farewelled to 2023, a year marked by numerous changes and personal evolution, I find myself recollecting the multitude of experiences that unfolded. My 2023 journey was nothing short of fascinating and exciting, prompting me to revisit the year from various angles. After seeing hoards of posts in social media generated by Github Contributions Chart, I thought I could also build an APP to summarize my Github contribution for every year for friends to have fun.| Posts on In Pursuit of Simplicity
1 Introduction 1.1 IaC Infrastructure as code(IaC) is the managing and provisioning of infrastructure through code instead of manual processes, for example, clicking button, adding or editing roles in AWS console. 1.2 AWS CloudFormation AWS CloudFormation is the original IaC tool for AWS, released in 2011, which uses template files to automate and mange the setup of AWS resources. 1.3 AWS CDK AWS Cloud Development Kit(CDK) is a product provided by AWS that makes it easier for developers to ma...| Posts on In Pursuit of Simplicity
1 Definition In computer science, a topological sort or topological ordering of a directed graph is a linear ordering of its vertices such that for every directed edge uv from vertex u to vertx v, u comes before v in the ordering. It sounds pretty academic, but I am sure you are using topological sort unconsciously every single day. 2 Application Many real world situations can be modeled as a graph with directed edges where some events must occur before others. Then a topological sort gives a...| Posts on In Pursuit of Simplicity
1 Preface I have been maintained a legacy distributed timer for months for my employer, then some important pay business are leveraging on it, with 1 billion tasks handled every day and 20k tasks added per second at most. Even though it’s old and full of black magic code, but it also also have insighted and well-designed code. Based on this old, running timer, I summarize and extract as this article, and it wont include any running code(perhaps pseudocode, and a lot of figures, as an adage ...| Posts on In Pursuit of Simplicity
1 Prologue A while ago, I took a flight from Canada back to Hong Kong - about 12 hours in total with Air Canada. Interestingly, the plane actually had WiFi: However, the WiFi had restrictions. For Aeroplan members who hadn’t paid, it only offered Free Texting, meaning you could only use messaging apps like WhatsApp, Snapchat, and WeChat to send text messages, but couldn’t access other websites. If you wanted unlimited access to other websites, it would cost CAD $30.75:| In Pursuit of Simplicity
