In Visual Studio 2015 Succinctly, author Alessandro Del Sole explains how to take advantage of the highly anticipated features in Microsoft Visual Studio 2015. Topics include sharing code between different types of projects, new options for debugging and diagnostics, and improving productivity with other services in the Visual Studio ecosystem, such as NuGet and Azure.

One Blazor Template to Rule Them All in .NET 8

In .NET 8 there is a new project in town that unifies the developing experience between Blazor Server and Blazor Web Assembly application models. In this video we will go over the new template and how we can get started using it! 

In September 2019, the W3C (World Wide Web Consortium) introduced a new CSS nesting feature that simplifies the way we apply styles to our web pages. In this blog post, we will explore this new feature and how it can enhance the Vanilla CSS experience. 

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppComponent } from './app.component';
import { HttpClientModule } from "@angular/common/http";
import { ApolloModule, APOLLO_OPTIONS } from "apollo-angular";
import { HttpLinkModule, HttpLink } from "apollo-angular-link-http";
import { InMemoryCache } from "apollo-cache-inmemory";


@NgModule({
  declarations:
    [
      AppComponent
    ],
  imports:
    [
      BrowserModule,
      HttpClientModule,
      ApolloModule,
      HttpLinkModule
    ],
  providers:
    [
      {
        provide: APOLLO_OPTIONS,
        useFactory: (httpLink: HttpLink) => {
          return {
            cache: new InMemoryCache(),
            link: httpLink.create({
              uri: "https://localhost:5001/graphql"
            })
          }
        },
        deps:
          [
            HttpLink
          ]
      }],
  bootstrap:
    [
      AppComponent
    ]
})
export class AppModule { }

Variable Naming Best Practices in JavaScript

Like any other programming language, JavaScript relies heavily on well-structured and understandable code. One of the fundamental building blocks of clean JavaScript code is effective variable naming.

By adhering to certain best practices, you can significantly enhance the readability and maintainability of your JavaScript projects. Let’s dive into 12 sets of JavaScript variable naming guidelines.

1. ()Request.GetFriendlyUrlFileVirtualPath
   مسیر مجازی فایل را بر می‌گرداند
   

   

2. ()Request.GetFriendlyUrlSegments
   بخش‌های آدرس را بر می‌گرداند
   

   

3. ()Request.GetFriendlyUrlFileExtension
   پسوند فایل آدرس را بر می‌گرداند
   

   

کلاس FriendlyUrl دو متود استاتیک و یک خاصیت دارد 

1. FriendlyUrl.Segments
   شبیه ()Request.GetFriendlyUrlSegments مجموعه بخش‌های آدرس صفحه جاری را بر می‌گرداند 
2. FriendlyUrl.Resolve 
   آدرس صفحه جاری را بر می‌گرداند 
3. FriendlyUrl.Href
   امکان ساخت یک آدرس را با استفاده از مسیر مجازی، بخش‌ها و پارامتر‌ها، فراهم می‌نماید

    public struct Optional<T>
    {
        public bool HasValue { get; }
        public T Value { get; }
    }

class ConsoleWriteLineWalker : CSharpSyntaxWalker
{
    public ConsoleWriteLineWalker()
    {
        Arguments = new List<ExpressionSyntax>();
    }
 
    public List<ExpressionSyntax> Arguments { get; }
 
    public override void VisitInvocationExpression(InvocationExpressionSyntax node)
    {
        var member = node.Expression as MemberAccessExpressionSyntax;
        var type = member?.Expression as IdentifierNameSyntax;
        if (type != null && type.Identifier.Text == "Console" && member.Name.Identifier.Text == "WriteLine")
        {
            if (node.ArgumentList.Arguments.Count == 1)
            {
                var arg = node.ArgumentList.Arguments.Single().Expression;
                Arguments.Add(arg);
                return;
            }
        }
 
        base.VisitInvocationExpression(node);
    }
}

static void getConstantValue()
{
    // Get the syntax tree.
    var code = @"
                using System;
 
                class Foo
                {
                    void Bar(int x)
                    {
                        Console.WriteLine(3.14);
                        Console.WriteLine(""qux"");
                        Console.WriteLine('c');
                        Console.WriteLine(null);
                        Console.WriteLine(x * 2 + 1);
                    }
                }
                ";
 
    var tree = CSharpSyntaxTree.ParseText(code);
    var root = tree.GetRoot();
 
    // Get the semantic model from the compilation.
    var mscorlib = MetadataReference.CreateFromFile(typeof(object).Assembly.Location);
    var comp = CSharpCompilation.Create("Demo").AddSyntaxTrees(tree).AddReferences(mscorlib);
    var model = comp.GetSemanticModel(tree);
 
    // Traverse the tree.
    var walker = new ConsoleWriteLineWalker();
    walker.Visit(root);
 
 
    // Analyze the constant argument (if any).
    foreach (var arg in walker.Arguments)
    {
        var val = model.GetConstantValue(arg);
        if (val.HasValue)
        {
            Console.WriteLine(arg + " has constant value " + (val.Value ?? "null") + " of type " + (val.Value?.GetType() ?? typeof(object)));
        }
        else
        {
            Console.WriteLine(arg + " has no constant value");
        }
    }
}

 3.14 has constant value 3.14 of type System.Double
"qux" has constant value qux of type System.String
'c' has constant value c of type System.Char
null has constant value null of type System.Object
x * 2 + 1 has no constant value

static void workingWithSymbols()
{
    // Get the syntax tree.
    var code = @"
                using System;
 
                class Foo
                {
                    void Bar(int x)
                    {
                        // #insideBar
                    }
                }
 
                class Qux
                {
                    protected int Baz { get; set; }
                }
                ";
 
    var tree = CSharpSyntaxTree.ParseText(code);
    var root = tree.GetRoot();
 
    // Get the semantic model from the compilation.
    var mscorlib = MetadataReference.CreateFromFile(typeof(object).Assembly.Location);
    var comp = CSharpCompilation.Create("Demo").AddSyntaxTrees(tree).AddReferences(mscorlib);
    var model = comp.GetSemanticModel(tree);
 
    // Traverse enclosing symbol hierarchy.
    var cursor = code.IndexOf("#insideBar");
    var barSymbol = model.GetEnclosingSymbol(cursor);
    for (var symbol = barSymbol; symbol != null; symbol = symbol.ContainingSymbol)
    {
        Console.WriteLine(symbol);
    }
 
    // Analyze accessibility of Baz inside Bar.
    var bazProp = ((CompilationUnitSyntax)root)
        .Members.OfType<ClassDeclarationSyntax>()
        .Single(m => m.Identifier.Text == "Qux")
        .Members.OfType<PropertyDeclarationSyntax>()
        .Single();
    var bazSymbol = model.GetDeclaredSymbol(bazProp);
    var canAccess = model.IsAccessible(cursor, bazSymbol);
}

 Foo.Bar(int)
Foo
<global namespace>
Demo.exe
Demo, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null

static void bindingSymbols()
{
    // Get the syntax tree.
    var code = @"
                using System;
 
                class Foo
                {
                    private int y;
 
                    void Bar(int x)
                    {
                        Console.WriteLine(x);
                        Console.WriteLine(y);
 
                        int z = 42;
                        Console.WriteLine(z);
 
                        Console.WriteLine(a);
                    }
                }";
 
    var tree = CSharpSyntaxTree.ParseText(code);
    var root = tree.GetRoot();
 
    // Get the semantic model from the compilation.
    var mscorlib = MetadataReference.CreateFromFile(typeof(object).Assembly.Location);
    var comp = CSharpCompilation.Create("Demo").AddSyntaxTrees(tree).AddReferences(mscorlib);
    var model = comp.GetSemanticModel(tree);
 
    // Traverse the tree.
    var walker = new ConsoleWriteLineWalker();
    walker.Visit(root);
 
    // Bind the arguments.
    foreach (var arg in walker.Arguments)
    {
        var symbol = model.GetSymbolInfo(arg);
        if (symbol.Symbol != null)
        {
            Console.WriteLine(arg + " is bound to " + symbol.Symbol + " of type " + symbol.Symbol.Kind);
        }
        else
        {
            Console.WriteLine(arg + " could not be bound");
        }
    }
}

 x is bound to int of type Parameter
y is bound to Foo.y of type Field
z is bound to z of type Local
a could not be bound