programming – Page 2

Challenges Faced By QA

QA testing has a special space in the entire software development process. QA is responsible for maintaining bug-free and work on technological and business specifications for developed applications.

QA engineers need to know every project well and what it takes to achieve. You must provide customers with quality apps.

Given the burden of the job of a QA, in their daily duties it is natural to face many challenges. This article will contribute to understanding the most common problems facing every QA.

1. Unstable Environment

In general, QA teams face unstable problems in the world that we need to get ready for the majority of things. Often because of the overload the server gets stuck and several times needs a restart during the testing.

Escalate these issues to the seniors and make sure you get the environment ready for the testing.

2. Tools Being Force-fed

Now and then, we realise that a tool is not the right choice for the project. We do not have any other option but to keep using it because the clients/organization already have licences and would not go for a new one until the current licence expires.

It is not fun, but you learn alternate options. Or at least, one can conclude with regards to if the possibilities work.

3. Tight Deadlines

QA’s greatest obstacle is to receive last-minute test requests. The key factors for such specifications are that the phase of production takes longer than anticipated and the time for testing is underestimated. Testing and debugging typically take 50% of the development time. If QA has a short verification time period, the programme can verify the key company requirements. At least three days from the release of software testing should start.

Some other challenges faced by QAs include Testing Documents Created By Others, Friday Releases, Wrong Testing Estimations, Fixing Bugs During Testing, Last Minute Changes To Requirements and many more. You can read in detail about there in this article

Creating a List in C#

A list is a set of index accessible objects that provide search, sort and manipulate list objects with functionality. C# List class represents a collection of highly-typed objects which the index can access. In this article we learn how to work with C# lists by adding, removing and searching items using the class methods and properties of list class in a collection of objects.

List<T> in C# covers a list of objects that have been strongly typed. It provides features for listing items, adding list items, searching, sorting, and manipulating list items. T is the type of objects in List<T>, such as int, string, or any user-defined object.

List <T> is required when multiple object items such as student mark data or data on different subject names are used (string). In this case, List<T> can be used to keep that data in a list.

The System.Collection lists <T>.

Generic index and name space start with 0.

We can create a list by calling the builder List; it takes an int type argument that is capacities of the list. If the capacity is not set, the list size will be dynamic, and the list size will be increased each time an element is added. The following syntax is used to create the list.

You can read more about the syntax and how to add elements in a list in this blog here:

How to create a list in C#

Learn how to work with Nullable types in C#?

In C# language, there are majorly two types of data types Value and Reference type. We can not assign a null value directly to the Value data type, therefore, C# 2.0 provides us the Nullable types to assign a value data type to null.

What is Nullable types?

As described above, the Nullable types used to assign the null value to the value data type. That means we can directly assign a null value to a value data type attribute. Using Nullable<T>, we can declare a null value where T is a type like int, float, bool, etc.
Nullable types represent the Null value along with the actual range of that data type. Like the int data type can hold the value from -2147483648 to 2147483647 but a Nullable int can hold the value null and range from -2147483648 to 2147483647

How to declare Nullable types?

There are two ways to declare Nullable types.
Nullable<int> example;
OR
int? Example;

Properties of Nullable types?

Nullable types have two properties.

HasValue
Value

HasValue: This property returns a value of bool depending on whether or not the nullable variable has a value. If the variable has a value, it returns true; otherwise, if it has no value or is null, it returns false.

Nullable<int> a = null;

Console.WriteLine(a.HasValue); // Print False

Nullable<int> b = 9;

Console.WriteLine(b.HasValue); // Print True

Value: The value of the variable Nullable form is given by this property. If the variable has any value, the value will be returned; else, it will give the runtime InvalidOperationException exception when the variable value is null.

Nullable<int> a = null;
Console.WriteLine(a.Value); // Gives run time exception of type ‘InvalidOperationException’
Nullable<int> b = 9;
Console.WriteLine(b.Value); // Print 9

You can read more about method of Nullable types and rules of using Nullable types in this blog here:
How to work with Nullable types in C#