LawrenceHwang

// ==UserScript==
// @name         Instagram Quick Actions
// @namespace    https://www.instagram.com/
// @version      0.6.3
// @description  Adds "Not Interested" and "Block Account" shortcut buttons to every Instagram feed post.
// @match        https://www.instagram.com/*
// @run-at       document-idle
// @grant        none
// ==/UserScript==

LawrenceHwang

// ==UserScript==
// @name         URL Clean
// @namespace    https://github.com/
// @version      0.1.7
// @description  Cleans safe tracking parameters and known redirect wrappers on an allowlisted set of video, shopping, search, and social sites.
// @match        https://*.youtube.com/*
// @match        https://youtu.be/*
// @match        https://*.twitter.com/*
// @match        https://x.com/*
// @match        https://*.facebook.com/*

LawrenceHwang

"""
BYOK (Bring Your Own Key) demo for the GitHub Copilot SDK.

Sends a single prompt to any OpenAI-compatible endpoint — local Ollama, OpenAI,
Azure OpenAI, or any other compatible API — using the Copilot SDK session API.

Usage
-----
  # Local Ollama (default, no key required)
  uv run byok.py --prompt "Tell me a joke"

LawrenceHwang

GitHub Copilot Customization Architecture

Instructions · Skills · Custom Agents · Hooks · SDK

Best Practices for Engineers ｜ Principal Engineer Perspective

February 2026

---

Table of Contents

1. Architecture Overview — Five Core Components and Their Relationships

LawrenceHwang

function Set-MonitorInputSource {
    <#
        .SYNOPSIS
        Helper function to set the monitor state.

        .EXAMPLE Switch to HDMI
        Set-MonitorInputSource -InputSource HDMI

        .EXAMPLE Switch to DisplayPort
        Set-MonitorInputSource -InputSource DisplayPort

LawrenceHwang

function Convert-FromAppActivityReport {
    <#
    .SYNOPSIS
    Helper function to convert the iOS app activity report into custom objects
    https://developer.apple.com/documentation/foundation/urlrequest/inspecting_app_activity_data
    
    .EXAMPLE
    Get apps accessed iOS resources
    Convert-FromAppActivityReport -Path $path -Type access | Select-Object accessor_id -Unique

LawrenceHwang

function Set-TaskbarIconSize {
    # Sets the windows 11 task bar icon size. Default value is medium.
    [CmdletBinding()]
    param(
        [validateset("small", "medium", "large")]
        [string]$Size = "medium"
    )
    $sizeChart = @{
        "small"  = 0
        "medium" = 1

LawrenceHwang

Describe 'Pre-meeting Check List' { # These are a  Pester 5 compliant tests.
    Context 'Device Check' {
        It 'Device should be present and have OK status: [<deviceName>]' -TestCases @(
            @{deviceName = 'Blue Snowball' }
            @{deviceName = '*TrackBall Mouse' }
            @{deviceName = 'Microphone (Blue Snowball)' }
            @{deviceName = 'Canon EOS 6D Mark II' }
        ) {
            $device = (Get-PnpDevice -FriendlyName $deviceName -Status 'OK' -PresentOnly -ErrorAction SilentlyContinue)
            $device.count | Should -BeGreaterOrEqual 1

LawrenceHwang

Describe 'Unit testing the helper functions in self contained script' {
    BeforeAll {
        # Using AST to parse the function definitions from the self contained script.
        # Then, save the script of the Pester test drive.
        $FilePath = Join-Path -Path '.' -ChildPath 'ScriptWithFunction.ps1'
        $ast = [System.Management.Automation.Language.Parser]::ParseFile($FilePath, [ref]$null, [ref]$null)
        $functionDefinition = $ast.FindAll( {
                param([System.Management.Automation.Language.Ast] $AstInput)
                $AstInput -is [System.Management.Automation.Language.FunctionDefinitionAst] -and
                # Class methods have a FunctionDefinitionAst under them as well, but we don't want them.

LawrenceHwang

# https://twitter.com/dfinke/status/1167559940598370304
function Get-Exponent {
    param(
        [int]$Base,
        [int]$Power
    )
    $exponent = [Math]::Pow($Base, $Power)
    $exponent
}
function Get-OneSeries {