Tutorial by Examples: sin

Sometimes, it can be useful to import functions and structs relatively without having to use something with its absolute path in your project. To achieve this, you can use the module super, like so: fn x() -> u8 { 5 } mod example { use super::x; fn foo() { println!(...

The following example will return the byte[] data of a zipped file containing the files provided to it, without needing access to the file system. public static byte[] ZipFiles(Dictionary<string, byte[]> files) { using (MemoryStream ms = new MemoryStream()) { using (ZipArc...

Let's say that you have exam scores for several exams and you want to divide them into quartiles per exam. -- Setup data: declare @values table(Id int identity(1,1) primary key, [Value] float, ExamId int) insert into @values ([Value], ExamId) values (65, 1), (40, 1), (99, 1), (100, 1), (90, 1), ...

function somethingThatReturnsADisposableResource() { return getSomeResourceAsync(...).disposer(resource => { resource.dispose() }) } Promise.using(somethingThatReturnsADisposableResource(), resource => { // use the resource here, the disposer will automatically close it when ...

app.use(async (ctx, next) => { try { await next() // attempt to invoke the next middleware downstream } catch (err) { handleError(err, ctx) // define your own error handling function } })

You can qualify a whole folder folder for a specific device type, its files will override the ones outside it on that device: / DeviceFamily-Mobile PageOfEden.xaml MainPage.xaml MainPage.xaml MainPage.xaml.cs PageOfEden.xaml PageOfEden.xaml.cs Files inside the qualifying folder won...

Let's assume we have an Image element using a square image named Picture.png. We can use different files for each dimension set for the element. Picture.TargetSize-16.png Picture.TargetSize-32.png Picture.TargetSize-128.png Now if we set the Height or Width of our Image to 16px, it will use P...

Multidimensional arrays follow the same rules as single-dimensional arrays when passing them to a function. However the combination of decay-to-pointer, operator precedence, and the two different ways to declare a multidimensional array (array of arrays vs array of pointers) may make the declaratio...

This guide assumes you have already installed react, redux, react-router and react-redux and have configured react, redux and react-router., If you haven't, Please do so. Note: While react-router in not a dependency of react-redux, It's very likely that we will using it in our react application for...

This UNION ALL combines data from multiple tables and serve as a table name alias to use for your queries: SELECT YEAR(date_time_column), MONTH(date_time_column), MIN(DATE(date_time_column)), MAX(DATE(date_time_column)), COUNT(DISTINCT (ip)), COUNT(ip), (COUNT(ip) / COUNT(DISTINCT (ip))) AS Ratio ...

First of all, the problem of handling spaces in arguments is NOT actually a Java problem. Rather it is a problem that needs to be handled by the command shell that you are using when you run a Java program. As an example, let us suppose that we have the following simple program that prints the siz...

All we need are: ViewPager, TabLayout and 2 drawables for selected and default dots. Firstly, we have to add TabLayout to our screen layout, and connect it with ViewPager. We can do this in two ways: Nested TabLayout in ViewPager <android.support.v4.view.ViewPager android:id="@+i...

Adding a Product to a Shopping Cart The following example demonstrates how to Add a product (or anything) to a Database Table asynchronously, using AJAX, and TypeScript. declare var document; declare var xhr: XMLHttpRequest; window.onLoad = () => { Start(); }; function Start() { ...

This example uses the Thread Class, but multithreaded applications can also be made using BackgroundWorker. The AddNumber, SubstractNumber, and DivideNumber functions will be executed by separate threads: Edit: Now the UI thread waits for the child threads to finish and shows the result. Module Mo...

GSON does not support inheritance our of the box. Let's say we have the following class hierarchy: public class BaseClass { int a; public int getInt() { return a; } } public class DerivedClass1 extends BaseClass { int b; @Override public int getIn...

Let's assume we have an entity status field with 3 options Tentative Pending Approved Our goal is to show different color for each status as follow: Tentative will be Red Pending will be Orange Approved will be Green The switch condition: =Switch(Fields!ItemStatus.Value = "Tentativ...

Given you've already installed composer up and running and it's accessible globally, you can simply create new Symfony projects as stated in the official documentation. Now you can create a new Symfony project with composer: composer create-project symfony/framework-standard-edition my_project_nam...

import 'whatwg-fetch'; function checkStatus(response) { if (response.status >= 200 && response.status < 300) { return response; } const error = new Error(response.statusText); error.response = response; throw error; } function parseJSON(response) { return ...

Sub Theloopofloops() Dim wbk As Workbook Dim Filename As String Dim path As String Dim rCell As Range Dim rRng As Range Dim wsO As Worksheet Dim sheet As Worksheet path = "pathtofile(s)" & "\" Filename = Dir(path & "*.xl??") Set wsO =...

This example illustrates how to read various-type struct entries from MATLAB, and pass it to C equivalent type variables. While it is possible and easy to figure out from the example how to load fields by numbers, it is here achieved via comparing the field names to strings. Thus the struct fields ...