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Server Side Programming Articles
Found 21,074 articles
Explain difference between == and is operator in Python.
In Python, == and is are both comparison operators but they check different things. == checks if two objects have the same value (equality), while is checks if two variables point to the same object in memory (identity). == Operator (Equality) The == operator compares the values of two objects. If the values are equal, it returns True, regardless of whether they are stored at different memory locations. is Operator (Identity) The is operator checks whether two variables refer to the exact same object in memory (same id()). Even if two objects have equal values, is ...
Read MoreDifference between two given time periods in C++
Given two time periods in HH:MM:SS format where HH represents hours, MM represents minutes, and SS represents seconds, find the difference between them in the same format. The approach uses borrowing (similar to subtraction in arithmetic) when seconds or minutes of the smaller time are greater. Worked Example Time period 1 = 8:06:02 Time period 2 = 3:09:03 Step 1: Seconds: 02 < 03, borrow 1 minute → 62 - 03 = 59 seconds Step 2: Minutes: 05 < 09, borrow 1 hour → 65 - 09 = 56 minutes Step 3: Hours: ...
Read MoreDifference between readonly and const keyword in C#
In C#, both readonly and const are used to create fields whose values cannot be modified after being set. The key difference is when the value is determined − const is resolved at compile time, while readonly is resolved at runtime (in the constructor). const Keyword The const keyword creates a compile-time constant. The value must be assigned at the time of declaration and cannot be changed afterward. const fields are implicitly static and can be declared inside methods. readonly Keyword The readonly keyword creates a runtime constant. The value can be assigned either at declaration ...
Read MoreDifference between monolithic and microservices architecture
Monolithic and Microservices are two different architectural approaches for building software applications. A monolithic architecture builds the entire application as a single, tightly coupled unit, while microservices architecture breaks it into small, independent services based on business functionality. Monolithic Architecture Monolithic architecture is built as one large system, usually as a single codebase. All components (UI, business logic, data access) are tightly coupled and deployed together. As the application grows, it becomes difficult to isolate services for independent scaling, and changing technology or frameworks becomes extremely challenging because everything depends on each other. Microservices Architecture Microservices ...
Read MoreDifference between the and$ operator in php
In PHP, $ and $$ are both used with variables but serve different purposes. $ is the standard variable prefix, while $$ creates a variable variable − a variable whose name is stored in another variable. $ (Variable Operator) The $ operator is used to declare and access variables in PHP. Every variable in PHP starts with a dollar sign followed by the variable name. Variables can hold any type of value including integers, strings, arrays, and objects. $name = "Alice"; // string variable $age = 25; ...
Read MoreDifference between the | and || or operator in php
In PHP, | and || are both OR operators but operate at different levels. | is a bitwise OR that works on individual bits of integer values, while || is a logical OR that works on boolean truth values of complete operands. | (Bitwise OR Operator) The | operator compares each bit of two integers and sets the resulting bit to 1 if either corresponding bit is 1. It returns an integer result. 1 in binary: 0 0 0 1 2 in binary: 0 0 1 0 ───────────────────── ...
Read MoreDifference between !== and ==! operator in PHP
In PHP, !== and ==! may look similar but behave very differently. !== is a single operator (strict not-equal), while ==! is actually two operators combined: the equality operator == followed by the logical NOT ! applied to the right operand. !== (Strict Not-Equal Operator) The !== operator is a single comparison operator that checks if two values are not equal OR not of the same type. It does not perform type conversion. For example, 1 !== '1' returns true because the types differ (integer vs string). // !== checks value AND type var_dump(1 !== '1'); ...
Read MoreDifference between float and double in C/C++
In C/C++, float and double are data types used to represent floating-point numbers (numbers with a decimal part). The key difference is precision − double has twice the precision of float, which means it can represent numbers with more decimal digits of accuracy. Precision and Storage float uses 32 bits (1 sign bit, 8 exponent bits, 23 mantissa bits) and provides about 6–7 significant decimal digits of precision. double uses 64 bits (1 sign bit, 11 exponent bits, 52 mantissa bits) and provides about 15–16 significant decimal digits of precision. Key Differences Feature float ...
Read MoreDifference between Structure and Array in C
In C, both structures and arrays are used as containers to store data. The key difference is that a structure can hold variables of different data types, while an array can only hold variables of the same data type. Example The following example demonstrates the difference between a structure and an array in C ? #include // Structure: holds different data types struct Student { char name[20]; int age; float gpa; }; int main() { // Structure ...
Read MoreDifference between system level exception and Application level exception.
An exception is an unwanted event that interrupts the normal flow of a program. In C#, exceptions are broadly categorized into System Level Exceptions (thrown by the CLR for fatal errors) and Application Level Exceptions (thrown by application code for recoverable errors). System Level Exception System level exceptions are derived from System.SystemException and are thrown by the .NET Common Language Runtime (CLR). They represent non-recoverable or fatal errors such as stack overflow, out of memory, null reference, or database crashes. These exceptions are generally not handled by application code. Common examples − NullReferenceException, StackOverflowException, OutOfMemoryException, IndexOutOfRangeException. ...
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