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Technical articles with clear explanations and examples
Compare this instance is equal to a specified object or Int64 in C#
The Equals() method in C# is used to compare whether the current instance of a long (Int64) is equal to a specified object or another Int64 value. This method performs value-based comparison and returns a boolean result. Syntax Following is the syntax for the Equals() method − public bool Equals(long value) public override bool Equals(object obj) Parameters value − A long value to compare with the current instance. obj − An object to compare with the current instance. Return Value Returns true if the current ...
Read MoreWhat is the use of yield return in C#?
The yield return keyword in C# enables lazy evaluation and custom iteration over collections. When you use yield return, the method becomes an iterator that returns values one at a time, pausing execution between each return and resuming where it left off when the next value is requested. Syntax Following is the syntax for using yield return − public static IEnumerable MethodName() { // some logic yield return value; // more logic yield return anotherValue; } You can ...
Read MoreGet the hash code for the current Int64 instance in C#
The GetHashCode() method in C# returns a hash code for the current Int64 instance. This method is inherited from the Object class and is commonly used in hash-based collections like Dictionary and HashSet to efficiently store and retrieve values. Hash codes are 32-bit integers that provide a quick way to compare objects for equality. Two equal Int64 values will always have the same hash code, but different values may occasionally produce the same hash code (called a collision). Syntax Following is the syntax for getting the hash code of an Int64 value − public override ...
Read MoreWhat is the difference between Last() and LastOrDefault() in Linq C#?
Both Last() and LastOrDefault() are LINQ extension methods that retrieve the last element from a sequence. The key difference is how they handle empty sequences or no matching elements: Last() throws an InvalidOperationException when no element is found, while LastOrDefault() returns the default value for the type (null for reference types, 0 for integers, etc.). Syntax Following is the syntax for Last() method − public static T Last(this IEnumerable source); public static T Last(this IEnumerable source, Func predicate); Following is the syntax for LastOrDefault() method − public static T LastOrDefault(this IEnumerable source); ...
Read MoreC# Program to Check if an Array is Sorted
We are given an array, and we need to check whether the array is sorted or not. The array can be sorted in either ascending or descending order. In this article, we will discuss different approaches to check if an array is sorted using C#. Problem Examples Input: array = {1, 2, 3, 4, 5} Output: True Explanation: The array is sorted in ascending order. Input: array = {29, 28, 27, 26, 25, 24} Output: True Explanation: The array is sorted in descending order. Input: array = {12, 10, 19, 11, 9} Output: False Explanation: The ...
Read MoreCheck whether the specified Unicode character is a punctuation mark in C#
The Char.IsPunctuation() method in C# determines whether a specified Unicode character is classified as a punctuation mark. This method returns true if the character belongs to any punctuation category, otherwise it returns false. Punctuation marks include characters like periods, commas, semicolons, exclamation points, question marks, brackets, and other symbols used for punctuation in text. Syntax Following is the syntax for the Char.IsPunctuation() method − public static bool IsPunctuation(char c) Parameters c − The Unicode character to evaluate. Return Value Returns true if the character is a ...
Read MoreHow to remove element from the specified index of the List in C#?
To remove an element from a specified index in a List in C#, you use the RemoveAt() method. This method removes the element at the given index and automatically shifts all subsequent elements one position to the left. Syntax Following is the syntax for the RemoveAt() method − list.RemoveAt(int index); Parameters index − The zero-based index of the element to remove. Must be a valid index (0 ≤ index < Count). Using RemoveAt() with String List The following example demonstrates removing an element at index 5 from a list ...
Read MoreHow to get Synchronize access to an Array in C#?
To get synchronized access to an array in C#, you can use the SyncRoot property of the array along with the lock statement. This ensures thread-safe access when multiple threads are accessing the same array concurrently. The SyncRoot property returns an object that can be used to synchronize access to the array, preventing data races and ensuring thread safety in multi-threaded applications. Syntax Following is the syntax for synchronizing access to an array − lock(array.SyncRoot) { // Thread-safe operations on the array foreach (var item in array) { ...
Read MoreHow to get Seventh Element of the Tuple in C#?
A Tuple in C# is a data structure that can hold multiple values of different types. To access the seventh element of a tuple, you use the Item7 property. This property is available in tuples that have seven or more elements. Syntax Following is the syntax for accessing the seventh element of a tuple − var seventhElement = tupleName.Item7; For creating a tuple with seven elements − var tuple = Tuple.Create(item1, item2, item3, item4, item5, item6, item7); Using Item7 Property The Item7 property directly retrieves the seventh element from ...
Read MoreHow to retrieve the system's reference to the specified String in C#?
The string.Intern() method in C# retrieves the system's reference to the specified string from the intern pool. The intern pool is a table maintained by the .NET runtime that contains references to all string literals and interned strings to optimize memory usage by ensuring that identical strings share the same memory location. Syntax Following is the syntax for the string.Intern() method − public static string Intern(string str) Parameters str − The string to search for in the intern pool. Return Value Returns a reference to the string ...
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