Tutorial by Examples: ect

Dependency Injection Types

This example will demonstrate how to use Dependency Injection (DI) design pattern in Swift using these methods: Initializer Injection (the proper term is Constructor Injection, but since Swift has initializers it's called initializer injection) Property Injection Method Injection Example Set...

Swift Language • Dependency Injection

JSP out implicit object - simply displaying date and time.

jsp • Implicit objects

Remove "OLE Object" fields

If you have images or other data stored in Access itself as OLE Objects, then you should find a better approach. When the OLE data is stored, it is stored according to the software (and version of software) on the computer storing it. When another computer goes to display that OLE Object data on the...

ms-access • How to troubleshoot Access crashes

Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM

Appearance: "Paamayim Nekudotayim" means "double colon" in Hebrew; thus this error refers to the inappropriate use of the double colon operator (::). The error is typically caused by an attempt to call a static method that is, in fact, not static. Possible Solution: $classname...

PHP • Compilation of Errors and Warnings

Objects

Retrieve an Active Directory Object #Identity can be ObjectGUID, Distinguished Name or many more Get-ADObject -Identity "ObjectGUID07898" Move an Active Directory Object Move-ADObject -Identity "CN=JohnSmith,OU=Users,DC=Domain,DC=Local" -TargetPath "OU=SuperUser,DC=Do...

PowerShell • ActiveDirectory module

OpenMP: Parallel Sections

This example illustrates the basics of executing sections of code in parallel. As OpenMP is a built-in compiler feature, it works on any supported compilers without including any libraries. You may wish to include omp.h if you want to use any of the openMP API features. Sample Code std::cout <...

C++ • Concurrency With OpenMP

OpenMP: Parallel Sections

This example shows how to execute chunks of code in parallel std::cout << "begin "; // Start of parallel sections #pragma omp parallel sections { // Execute these sections in parallel #pragma omp section { ... do something ... std::cout <...

C++ • Concurrency With OpenMP

Fill from collection

//create a new ExcelPackage using (ExcelPackage excelPackage = new ExcelPackage()) { //create a WorkSheet ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets.Add("Sheet 1"); //create a new list with books List<Book> books = new List<Book>(); ...

epplus • Filling the document with data

request object in JSP

used to get request information such as parameter, header information, remote address, server name, server port, content type, character encoding. Index.html <form action="req.jsp"> <input type="text" name="username"> <input type="s...

jsp • Implicit objects

Vectors

A vector is essentially a pointer to a heap-allocated, dynamically-sized list of objects of a single type. Example fn main() { // Create a mutable empty vector let mut vector = Vec::new(); vector.push(20); vector.insert(0, 10); // insert at the beginning println!(&qu...

Rust • Arrays, Vectors and Slices

Using Qt:DirectConnection when receiver object doesn't receive signal

Some times you see a signal is emitted in sender thread but connected slot doesn't called (in other words it doesn't receive signal), you have asked about it and finaly got that the connection type Qt::DirectConnection would fix it, so the problem found and everything is ok. But generaly this is ba...

Qt • Common Pitfalls

Misusing GROUP BY with SELECT *, and how to fix it.

Sometimes a query looks like this, with a * in the SELECT clause. SELECT item.*, /* nonstandard */ COUNT(*) number_of_uses FROM item JOIN uses ON item.item_id, uses.item_id GROUP BY item.item_id Such a query needs to be refactored to comply with the ONLY_FULL_GROUP_BY sta...

MySQL • Error 1055: ONLY_FULL_GROUP_BY: something is not in GROUP BY clause ...

Connect to Oracle DB

A very easy way to connect to an ORACLE database is by using oracledb module. This module handles the connection between your Node.js app and Oracle server. You can install it like any other module: npm install oracledb Now you have to create an ORACLE connection, which you can later query. co...

Node.js • Node.js with Oracle

Query a connection object without parameters

Use may now use the connExecute-Function for executing a query. You have the option to get the query result as an object or array. The result ist printed to console.log. function connExecute(err, connection) { if (err) { console.error(err.message); return; } sql = ...

Node.js • Node.js with Oracle

Open Terminal in current Xcode project folder

Xcode have ability to run any script with hotkey. Here is example how to assign hotkey ⌘+⌥+⌃+⇧+T to open Terminal app in current project folder. Create bash script and save it in some folder #!/bin/bash # Project Name: $XcodeProject # Project Dir: $XcodeProjectPath # Workspace Dir: $X...

Xcode • Customizing Xcode IDE

Displaying current angular2 version used in your project

To display current version, we can use VERSION from @angular/core package. import { Component, VERSION } from '@angular/core'; @Component({ selector: 'my-app', template: `<h1>Hello {{name}}</h1> <h2>Current Version: {{ver}}</h2> `, }) export class AppCompone...

Angular 2 • Commonly built-in directives and services

Using Package Protected Scope

In Java if you don't provide an access modifier the default scope for variables is package-protected level. This means that classes can access the variables of other classes within the same package as if those variables were publicly available. package foo.bar public class ExampleClass { do...

Java Language • Packages

NSInvocation Objective-C

Refer to this original Post by e.James According to Apple's NSInvocation class reference: An NSInvocation is an Objective-C message rendered static, that is, it is an action turned into an object. And, in a little more detail: The concept of messages is central to the objective-c philosophy....

iOS • NSInvocation

Objective-C Example

First declare a property like this in the ViewController @property (nonatomic) UIRefreshControl *refreshControl; Later in the viewDidLoad() set up the refreshControl as given below: self.refreshControl = [[UIRefreshControl alloc]init]; [self.tableView addSubview:self.refreshControl]; [self.re...

iOS • UIRefreshControl TableView

this with simple objects

var person = { name: 'John Doe', age: 42, gender: 'male', bio: function() { console.log('My name is ' + this.name); } }; person.bio(); // logs "My name is John Doe" var bio = person.bio; bio(); // logs "My name is undefined" In the above code, person.bi...

JavaScript • Context (this)