int Sum() => a + b; Why it mattersReadable, compact, expressive.
Day: January 28, 2026
Span for High-Performance Parsing
Why it mattersZero allocations in hot paths.
Pattern Matching switch
return obj switch { null => 0, _ => 1 }; Why it mattersClear intent, fewer bugs.
Avoid SELECT * in Production
Why it mattersSchema changes won’t silently break performance.
Covering Indexes Reduce Lookups
INCLUDE (Name, Email) Why it mattersQueries hit index only → faster reads.
Environment-Specific Config Overrides
Why it mattersAvoids prod accidents caused by wrong configs.
Minimal APIs with Validation
app.MapPost(“/users”, (User u) => Results.Ok()); Why it mattersLess ceremony, same power.
Undo Local Changes Safely
git restore . Why it mattersModern replacement for dangerous commands.
Search History by Content
git log -S “methodName” Why it mattersFind when logic changed, not just files.
Ajax — Always Set Timeouts
$.ajax({ timeout: 5000 }); Why it mattersPrevents hanging UI states.
structuredClone() Beats JSON Hacks
const copy = structuredClone(obj); Why it mattersHandles Dates, Maps, Sets safely.
Native Lazy Loading
<img loading=”lazy” src=”image.jpg”> Why it mattersFaster pages, zero JS.
:where() for Zero-Specificity Styling
:where(button) { margin: 0; } Why it mattersStyle globally without specificity wars.
App Execution Aliases Cleanup
Settings → Apps → App execution aliases Why it mattersFixes “wrong app opens” issues for dev tools.
Clipboard History Is a Superpower
Shortcut: Win + V Why it mattersRecover overwritten code, commands, passwords instantly.
Emergency Household Fix Advisor
Prompt Act as a practical home repair expert.Give safe, temporary fixes using common household items. Why it mattersUniversal value, highly shareable.
Generate SQL Index Suggestions
Prompt Analyze this query and suggest indexes based on read patterns and selectivity. Why it mattersTurns AI into a junior DBA.
Refactor Without Changing Behavior
Prompt Refactor this code for readability and maintainability.Do NOT change logic, outputs, or public contracts. Why it mattersSafe refactoring assistant, not a risky code generator.
Multi-Stage Builds = Smaller Images
FROM mcr.microsoft.com/dotnet/sdk AS build FROM mcr.microsoft.com/dotnet/aspnet Why it mattersFinal image contains only runtime → faster deploys, fewer vulnerabilities.
Use Liveness vs Readiness Correctly
livenessProbe: httpGet: path: /health port: 80 Why it mattersWrong probes cause infinite restarts or traffic to broken pods.
Custom Login Error Message (Security Trick)
add_filter(‘login_errors’, fn() => ‘Invalid credentials.’); Why it mattersPrevents username enumeration attacks.
Disable Emojis Without Plugins
remove_action(‘wp_head’, ‘print_emoji_detection_script’, 7); remove_action(‘wp_print_styles’, ‘print_emoji_styles’); Why it mattersRemoves extra JS/CSS → faster first paint.
Convert Photos to Blog-Friendly “Flat Depth” Style
Steps Image → Adjustments → Shadows/Highlights Reduce highlights, slightly lift shadows Desaturate by ~10% Why it mattersImages load lighter and match modern editorial styles.
Fix Over-Sharpened Text in UI Screenshots
Steps Filter → Blur → Gaussian Blur (0.3–0.5px) Then sharpen slightly using High Pass (0.6px) Why it mattersScreenshots often look harsh on retina displays. This restores natural readability.
Solution Filters for Massive Repos
TipUse .slnf (Solution Filter) files to load only the projects you actually need. Why it mattersLarge solutions kill startup time. Filters reduce memory usage and speed up context switching without touching the main solution.