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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to use the return statement in C#?
The return statement in C# is used to exit a method and optionally return a value to the caller. When a method contains a return statement, the program control immediately transfers back to the calling method along with the specified return value. Syntax Following is the syntax for using the return statement − return; // For void methods (no value returned) return expression; // For methods that return a value Using Return Statement with Value Types When a method has a return type other than void, it must return a ...
Read MoreMath.Sin() Method in C#
The Math.Sin() method in C# is used to return the sine of a specified angle. The method accepts an angle in radians and returns a double value representing the sine of that angle. Syntax Following is the syntax for the Math.Sin() method − public static double Sin(double val); Parameters val − A double value representing an angle in radians. Return Value The method returns a double value representing the sine of the specified angle. The return value ranges from -1 to 1. For special cases − ...
Read MoreC# program to check if a Substring is present in a Given String
The Contains() method in C# is used to check if a substring is present within a given string. It returns a boolean value − true if the substring is found, and false otherwise. Syntax Following is the syntax for the Contains() method − bool result = string.Contains(substring); Parameters substring − The string to search for within the main string. Return Value The Contains()
Read MoreHow is an array initialized in C#?
All arrays consist of contiguous memory locations. The lowest address corresponds to the first element and the highest address to the last element. In C#, arrays must be properly initialized before you can use them to store and access data. Array Declaration vs Initialization Firstly, declare an array − int[] rank; But declaring an array does not initialize the array in the memory. When the array variable is initialized, you can assign values to the array. Array is a reference type, so you need to use the new keyword to create an instance ...
Read MoreWhat are virtual functions in C#?
The virtual keyword in C# allows a method, property, indexer, or event to be overridden in derived classes. Virtual functions enable runtime polymorphism, where the actual method called is determined at runtime based on the object's type, not the reference type. When you define a virtual function in a base class, derived classes can provide their own implementations using the override keyword. This allows different derived classes to implement the same method differently while maintaining a common interface. Syntax Following is the syntax for declaring a virtual method − public virtual returnType MethodName() { ...
Read MoreC# Linq Reverse Method
The LINQ Reverse() method in C# is used to reverse the order of elements in a sequence. It returns a new sequence with elements in reverse order without modifying the original collection. Syntax Following is the syntax for the LINQ Reverse() method − public static IEnumerable Reverse( this IEnumerable source ) Parameters source: The sequence of values to reverse. It must implement IEnumerable. Return Value The Reverse() method returns an IEnumerable whose elements correspond to those of the input sequence in reverse order. ...
Read MoreCharEnumerator.Reset() Method in C#
The CharEnumerator.Reset() method in C# initializes the enumerator's position to logically before the first character of the enumerated string. This method is useful when you need to restart enumeration from the beginning after having already iterated through the string. Syntax Following is the syntax for the CharEnumerator.Reset() method − public void Reset(); Parameters This method takes no parameters. Return Value This method does not return any value (void). How It Works When you call Reset(), the enumerator's internal position is moved to before the first character. After calling Reset(), ...
Read MoreC# program to check if string is panagram or not
A pangram is a sentence that contains all 26 letters of the English alphabet at least once. The word "pangram" comes from Greek, meaning "all letters". A famous example is "The quick brown fox jumps over the lazy dog". In C#, we can check if a string is a pangram by converting it to lowercase, filtering only alphabetic characters, and counting the distinct letters present. Syntax The basic approach uses LINQ methods to process the string − string.ToLower().Where(ch => Char.IsLetter(ch)).GroupBy(ch => ch).Count() This checks if the count of distinct letters equals 26. ...
Read MoreC# Program to Implement Stack with Push and Pop operations
A Stack in C# is a Last-In-First-Out (LIFO) data structure that allows elements to be added and removed from only one end, called the top. The Stack class in the System.Collections namespace provides built-in methods for implementing stack operations. The two primary operations of a stack are Push() to add elements and Pop() to remove elements. Additionally, the Peek() method allows you to view the top element without removing it. Syntax Following is the syntax for creating a Stack and using basic operations − Stack stackName = new Stack(); stackName.Push(element); // ...
Read MoreStringWriter vs StringReader in C#?
StringReader and StringWriter are classes in C# that derive from TextReader and TextWriter respectively. They provide convenient ways to read from and write to strings as if they were streams or files. StringWriter is used for writing data into a string buffer, while StringReader is used for reading data from a string. Both classes are particularly useful when working with APIs that expect TextReader or TextWriter objects. StringWriter Class StringWriter implements a TextWriter for writing information to a string. It maintains an internal StringBuilder that accumulates the written content. Syntax StringWriter writer = new ...
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