Tutorial by Examples: od

ngfor.component.html <StackLayout> <Label *ngFor="let item of items" [text]="item"></Label> </StackLayout> ngfor.component.ts import { Component } from "@angular/core"; var dataItems = ["data-item 1", "data-item 2&quo...

If we have a file called Business.hs, we can define a Business module that can be import-ed, like so: module Business ( Person (..), -- ^ Export the Person type and all its constructors and field names employees -- ^ Export the employees function ) where -- begin types, function defin...

Haskell supports importing a subset of items from a module. import qualified Data.Stream (map) as D would only import map from Data.Stream, and calls to this function would require D.: D.map odd [1..] otherwise the compiler will try to use Prelude's map function.

Classes, structs, enums and all their methods are internal by default. This means they can be only accessed from the same module. The test cases are in a different target an this means they are in a different module. To be able to access the method you want to test, you need to import the module to ...

This is an advanced example. You can use variant for light weight type erasure. template<class F> struct pseudo_method { F f; // enable C++17 class type deduction: pseudo_method( F&& fin ):f(std::move(fin)) {} // Koenig lookup operator->*, as this is a pseudo-method...

Run go test as normal, yet with the coverprofile flag. Then use go tool to view the results as HTML. go test -coverprofile=c.out go tool cover -html=c.out

What is JNA? Java Native Access (JNA) is a community-developed library providing Java programs an easy access to native shared libraries (.dll files on windows, .so files on Unix ...) How can I use it? Firstly, download the latest release of JNA and reference its jna.jar in your project's CLA...

const url = 'http://api.stackexchange.com/2.2/questions?site=stackoverflow&tagged=javascript'; const questionList = document.createElement('ul'); document.body.appendChild(questionList); const responseData = fetch(url).then(response => response.json()); responseData.then(({item...

The Data.Map module in the containers package provides a Map structure that has both strict and lazy implementations. When using Data.Map, one usually imports it qualified to avoid clashes with functions already defined in Prelude: import qualified Data.Map as Map So we'd then prepend Map funct...

In Normal Mode, commands can be entered by direct key combinations (typing u to undo the last change, for example). These commands often have equivalents in 'ex' mode, accessed by typing a colon :, which drops you into a single-line buffer at the bottom of the Vim window. In 'ex' mode, after typing...

To enable code shrinking with ProGuard, add minifyEnabled true to the appropriate build type in your build.gradle file. android { buildTypes { release { minifyEnabled true proguardFiles getDefaultProguardFile(‘proguard-android.txt'), 'pro...

For a class Person like: public class Person { public string Name { get; set; } public int Age { get; set; } public string Clothes { get; set; } } var person1 = new Person { Name = "Jon", Age = 20, Clothes = "some clothes" }; var person2 = new Person { Name ...

For given type Person: public class Person { public string Name { get; set; } public int Age { get; set; } public string Clothes { get; set; } } List<Person> persons = new List<Person> { new Person{ Name = "Jon", Age = 20, Clothes = "some clothes...

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var client = new AmazonDynamoDBClient(); Table booksTable = Table.LoadTable(client, "Books"); // Store item Document book = new Document(); book["Title"] = "Cryptonomicon"; book["Id"] = 42; book["Authors"] = new List<string> { "Ne...

This example consists of two parts: first, we must define our Book type; second, we use it with DynamoDBContext. [DynamoDBTable("Books")] class Book { [DynamoDBHashKey] public int Id { get; set; } public string Title { get; set; } public List<string> Authors { ...

The Collections class provides a way to make a list unmodifiable: List<String> ls = new ArrayList<String>(); List<String> unmodifiableList = Collections.unmodifiableList(ls); If you want an unmodifiable list with one item you can use: List<String> unmodifiableList = Col...

Comparator.comparing(Person::getName) This creates a comparator for the class Person that uses this person name as the comparison source. Also it is possible to use method version to compare long, int and double. For example: Comparator.comparingInt(Person::getAge) Reversed order To create ...

A class written within a method called method local inner class. In that case the scope of the inner class is restricted within the method. A method-local inner class can be instantiated only within the method where the inner class is defined. The example of using method local inner class: public...

Modules are defined in a file named module-info.java, named a module descriptor. It should be placed in the source-code root: |-- module-info.java |-- com |-- example |-- foo |-- Foo.java |-- bar |-- Bar.java Here is a simple module descri...