Tutorial by Examples: ti

Template Literals act like strings with special features. They are enclosed by by the back-tick `` and can be spanned across multiple lines. Template Literals can contain embedded expressions too. These expressions are indicated by a $ sign and curly braces {} //A single line Template Literal v...

To run script in debug mode you should add -d option in the command line: $perl -d script.pl If t is specified, it indicates to the debugger that threads will be used in the code being debugged: $perl -dt script.pl Additional info at perldocperlrun

Sometimes a complex IF condition is needed. Let's take and example, Assuming we have the following raw data: ItemIDItem NameItem Status1Item 1Tentative1Item 1Pending1Item 1Approved The Goal is: Let's assume our business user ask to see which items are not approved and which are approved. Tentati...

Use >-> to connect Producers, Consumers and Pipes to compose larger Pipe functions. printNaturals :: MonadIO m => Effect m () printNaturals = naturalsUntil 10 >-> intToStr >-> fancyPrint Producer, Consumer, Pipe, and Effect types are all defined in terms of the general Prox...

Unsafe is stored as a private field that cannot be accessed directly. The constructor is private and the only method to access public static Unsafe getUnsafe() has privileged access. By use of reflection, there is a work-around to make private fields accessible: public static final Unsafe UNSAFE; ...

User controls are made for reusability across ASP.NET pages, similar to master pages. Instead of sharing base page layout, user controls share group of HTML/ASP.NET built-in server controls or a specific form layout, e.g. comment submission or guest notes. A user control can contain both HTML contr...

If you want to instantiate an instance of user control inside ASPX code behind page, you need to write user control declaration on Page_Load event as follows: public partial class Default : System.Web.UI.Page { protected void Page_Load(Object sender, EventArgs e) { Control contr...

Like standard ASP.NET built-in server controls, user controls can have properties (attributes) on its definition tag. Suppose you want to add color effect on UserControl.ascx file like this: <uc:UserControl ID="UserControl1" runat="server" Color="blue" /> At t...

Sometimes you want to mock a class or an interface and have its properties behave as if they were simple getters and setters. As this is a common requirement, Moq provides a short cut method to setup all properties of a mock to store and retrieve values: // SetupAllProperties tells mock to impleme...

Sometimes you want to create a mock of a class that has a private setter: public class MockTarget { public virtual string PropertyToMock { get; private set; } } Or an interface that only defines a getter: public interface MockTarget { string PropertyToMock { get; } } In both ca...

Where a method to be tested uses information from one call to pass on to subsequent calls, one approach that can be used to ensure the methods are called in the expected order is to setup the expectations to reflect this flow of data. Given the method to test: public void MethodToTest() { va...

When you can't / don't want to use Strict Mocks, you can't use MockSequence to validate call order. An alternate approach is to use callbacks to validate that the Setup expectations are being invoked in the expected order. Given the following method to test: public void MethodToTest() { _ut...

Moq provides support for validating call order using MockSequence, however it only works when using Strict mocks. So, Given the following method to test: public void MethodToTest() { _utility.Operation1("1111"); _utility.Operation2("2222"); _utility.Operation3(&...

DELIMITER $$ CREATE DEFINER=`db_username`@`hostname_or_IP` FUNCTION `function_name`(optional_param data_type(length_if_applicable)) RETURNS data_type BEGIN /* SQL Statements goes here */ END$$ DELIMITER ; The RETURNS data_type is any MySQL datatype.

Actions are located in /usr/local/etc/scanbd/scanbd.conf. I have 4 buttons that are scan, copy, email and file. The default config file doesn't include all actions per default, you will probably have to add the block manually. You can have less or more buttons depending of your scanner model. ...

To change to an absolutely specified directory, use the entire name, starting with a backslash \, thus: cd /home/username/project/abc If you want to change to a directory near your current on, you can specify a relative location. For example, if you are already in /home/username/project, you can...

CakePHP 3.x has the ability to bake controllers, models, views and other framework defined objects. Note : If you have had some experience with the Laravel framework, the artisan component is similar to bake. The bake application is located in bin folder; the following are some of the availabl...

You can easily create tables for Your database or drop them if You want. If You wish to do that, You should learn how to write Migrations for desired database. Migrations files must be located in config/Migrations folder. File names can be in next formats: YYYYMMDDHHIISS_(Create|Alter|Delete)Ad...

Want to create a controller? There is 2 ways of creating it: Manually (You will be forced to manually create Controller file in src/Controller) Baked (Running bin/cake bake controller %controllerName% command from CLI) If You want to create it manually, go to src/Controller folder and create ...

from selenium import webdriver # Create a new webdriver driver = webdriver.Chrome() # Get a page that has a popup window (Use mouse to click "try it" button) driver.get("http://www.w3schools.com/js/tryit.asp?filename=tryjs_alert") # Accept the opened alert driver.switch_t...