davidfowl

Migration to ASP.NET Core in .NET 6

• WebApplication and WebApplicationBuilder
• Differences in the hosting model
• Building libraries for ASP.NET Core
• FAQ
• Cheatsheet

WebApplication and WebApplicationBuilder

ErikEJ

using System.Linq.Expressions;

namespace Microsoft.EntityFrameworkCore
{
    public static class IQueryableExtensions
    {
        public static IQueryable<TQuery> In<TKey, TQuery>(
        this IQueryable<TQuery> queryable,
        IEnumerable<TKey> values,
        Expression<Func<TQuery, TKey>> keySelector)

Jaykul

function Convert-Path {
    <#
        .SYNOPSIS
            A replacement for convert-path that returns a normalized form of paths, even on Windows file system.
        .DESCRIPTION
            This replacement for Convert-Path ensures it's returning the actual case for PowerShell paths, and normalizes them so that folders always include a trailing slash, allowing comparisons of paths to do so correctly.

            When working with environment variables and paths, we want to remove duplicates,
            but uniqueness tests are case-sensitive,
            while the Windows FileSystem (and thus, the built-in Convert-Path) is not.

NickCraver

<Query Kind="Program">
  <NuGetReference Prerelease="true">Microsoft.Diagnostics.Runtime</NuGetReference>
  <Namespace>Microsoft.Diagnostics.Runtime</Namespace>
  <Namespace>System</Namespace>
  <Namespace>System.IO</Namespace>
  <Namespace>System.Linq</Namespace>
  <Namespace>System.Text</Namespace>
  <Namespace>Microsoft.Diagnostics.Runtime.Utilities</Namespace>
</Query>

bobbygrace

Hello, visitors! If you want an updated version of this styleguide in repo form with tons of real-life examples… check out Trellisheets! https://github.com/trello/trellisheets

---

Trello CSS Guide

“I perfectly understand our CSS. I never have any issues with cascading rules. I never have to use !important or inline styles. Even though somebody else wrote this bit of CSS, I know exactly how it works and how to extend it. Fixes are easy! I have a hard time breaking our CSS. I know exactly where to put new CSS. We use all of our CSS and it’s pretty small overall. When I delete a template, I know the exact corresponding CSS file and I can delete it all at once. Nothing gets left behind.”

You often hear updog saying stuff like this. Who’s updog? Not much, who is up with you?

akisute

import UIKit

// How to make singleton classes in Swift: http://stackoverflow.com/questions/24024549/dispatch-once-singleton-model-in-swift
// Basically using global constants is the most easy and safe way to go

class APIClient: NSObject {
    
    let functionSessionManager:AFHTTPSessionManager
    
    class var sharedInstance:APIClient {

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD