Stamo-Gochev

{"lastUpload":"2022-01-20T08:06:10.390Z","extensionVersion":"v3.2.7"}

Stamo-Gochev

window.addEventListener("DOMContentLoaded",wof);
function wof() {
	var arrow = document.querySelector(".arrow"),
		arrowAngle = 0,
		wheelAngle = 0,
		snapAngle = 360/24/3,
		getAngle = function(ele) {
			let el = document.querySelector(ele),
				elTr = el.style.transform,
				// break down matrix value of transform and get angle

Stamo-Gochev

git log --author="Linus Torvalds" --date=iso | perl -nalE 'if (/^Date:\s+[\d-]{10}\s(\d{2})/) { say $1+0 }' | sort | uniq -c|perl -MList::Util=max -nalE '$h{$F[1]} = $F[0]; }{ $m = max values %h; foreach (0..23) { $h{$_} = 0 if not exists $h{$_} } foreach (sort {$a <=> $b } keys %h) { say sprintf "%02d - %4d %s", $_, $h{$_}, "*"x ($h{$_} / $m * 50); }'

Stamo-Gochev

        public static readonly ILoggerFactory MyLoggerFactory = LoggerFactory.Create(builder => { builder.AddDebug(); });
        
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<WeatherForecastContext>(options =>
                options.UseLoggerFactory(MyLoggerFactory)
                .UseSqlServer(Configuration.GetConnectionString("DefaultConnection")), ServiceLifetime.Transient);
            services.AddRazorPages();
            services.AddServerSideBlazor();
            services.AddScoped<WeatherForecastService>();

Stamo-Gochev

Cheat sheet: classes in JavaScript

Basic members of classes

class OtherClass {}

class MyClass1 extends OtherClass {

  publicInstanceField = 1;

Stamo-Gochev

Relational databases have been a successful technology for twenty years providing
- persistence
- concurrency control (Multiple apps and multiple users access the DB at the same time)
- integration mechanism (This is what prevented object oriented DBs to flourish)

Drawbacks of Relational DBs
- Impedance mismatch (In-memory(object) model of an application is different from (relational) model on disk). 
  That's why there are ORM frameworks which lead to loss of performance
- They are not designed to run efficiently on clusters

Stamo-Gochev

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Stamo-Gochev

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Stamo-Gochev

On Windows 10 build 18917 or higher

Win / Enable WSL and VMP

PowerShell:

dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart
dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart

// requires restart
Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux