Tutorial by Examples: en

To enable a CORS policy across all of your MVC controllers you have to build the policy in the AddCors extension within the ConfigureServices method and then set the policy on the CorsAuthorizationFilterFactory using Microsoft.AspNetCore.Mvc; using Microsoft.AspNetCore.Mvc.Cors.Internal; ... pub...

Sometimes it's really useful to know the type of child component when iterating through them. In order to iterate through the children components you can use React Children.map util function: React.Children.map(this.props.children, (child) => { if (child.type === MyComponentType) { ......

package com.mcf7.spring.domain; import org.springframework.validation.Errors; import org.springframework.validation.Validator; public class BeforeCreateBookValidator implements Validator{ public boolean supports(Class<?> clazz) { return Book.class.equals(clazz); } ...

Usually, J and K move up and down file lines. But when you have wrapping on, you may want them to move up and down the displayed lines instead. set wrap " if you haven't already set it nmap j gj nmap k gk

set mouse=a This will enable mouse interaction in the vim editor. The mouse can change the current cursor's position select text

That the easiest case actually, very natural in the React world and the chances are - you are already using it. You can pass props down to child components. In this example message is the prop that we pass down to the child component, the name message is chosen arbitrarily, you can name it anything...

To strip any number of leading components, use the --strip-components option: --strip-components=NUMBER strip NUMBER leading components from file names on extraction For example to strip the leading folder, use: tar -xf --strip-components=1 archive-name.tar

[MetadataType(typeof(RoleMetaData))] public partial class ROLE { } public class RoleMetaData { [Display(Name = "Role")] public string ROLE_DESCRIPTION { get; set; } [Display(Name = "Username")] public string ROLE_USERNAME { get; set; } } If you us...

A generic type is created to adapt so that the same functionallity can be accessible for different data types. Public Class SomeClass(Of T) Public Sub doSomething(newItem As T) Dim tempItem As T ' Insert code that processes an item of data type t. End Sub End Class ...

By creating an instance of the same class with a different type given, the interface of the class changes depending on the given type. Dim theStringClass As New SomeClass(Of String) Dim theIntegerClass As New SomeClass(Of Integer)

A generic class is a class who adapts to a later-given type so that the same functionality can be offered to different types. In this basic example a generic class is created. It has a sub who uses the generic type T. While programming this class, we don't know the type of T. In this case T has ...

In this example there are 2 instances created of the SomeClass Class. Depending on the type given the 2 instances have a different interface: Dim theStringClass As New SomeClass(Of String) Dim theIntegerClass As New SomeClass(Of Integer) The most famous generic class is List(of )

The possible types passed to a new instance of SomeClass must inherit SomeBaseClass. This can also be an interface. The characteristics of SomeBaseClass are accessible within this class definition. Public Class SomeClass(Of T As SomeBaseClass) Public Sub DoSomething(newItem As T) new...

Creating a new intance of a generic type can be done/checed at compile time. Public Class SomeClass(Of T As {New}) Public Function GetInstance() As T Return New T End Function End Class Or with limited types: Public Class SomeClass(Of T As {New, SomeBaseClass}) Public F...

The main change needed is to switch use_global_stats to true. This switches to using the moving average. layer { bottom: 'layerx' top: 'layerx-bn' name: 'layerx-bn' type: 'BatchNorm' batch_norm_param { use_global_stats: true # use pre-calculated average and variance } param { lr_mult...

add_shortcode is wp keyword. // recent-posts is going to be our shortcode. add_shortcode('recent-posts', 'recent_posts_function'); // This function is taking action when recent post shortcode is called. function recent_posts_function() { query_posts(array('orderby' => 'date', 'order' =&...

This functions takes parameter for how many recent posts you want to display. Ex : you want to display only five recent posts. Just passed the arguments with posts="5" (you can pass any number of recent posts that you want to display). Function fetch only five recent posts from database....

When testing with Google App Engine's testing library the challenges of eventual consistency are present in the same manner they will be in production. Therefore in order to write something into the datastore to test retrieval you have to create a context which is strongly consistent. type Foo str...

By default, mix new <projectname> will generate a .gitignore file in the project root that is suitable for Elixir. # The directory Mix will write compiled artifacts to. /_build # If you run "mix test --cover", coverage assets end up here. /cover # The directory Mix downloads...

When the temp table is created by itself, it will remain while the connection is open. // Widget has WidgetId, Name, and Quantity properties public async Task PurchaseWidgets(IEnumerable<Widget> widgets) { using(var conn = new SqlConnection("{connection string}")) { ...