How can the null coalescing operator be used to set a default value for a variable?
The null coalescing operator in PHP can be used to set a default value for a variable. It provides a concise way to check if a variable is null and assign a default value to it if it is. The null coalescing operator is represented by two question marks (??). To understand how the null
- Published in Web Development, EITC/WD/PMSF PHP and MySQL Fundamentals, Expertise in PHP, Null coalescing, Examination review
How does JavaScript's weak typing differ from strongly typed languages like Java?
JavaScript's weak typing sets it apart from strongly typed languages like Java in terms of how variables are declared, assigned, and used. In a strongly typed language like Java, variables are bound to a specific data type and cannot be reassigned to a different type without explicit type casting. On the other hand, JavaScript allows
- Published in Web Development, EITC/WD/JSF JavaScript Fundamentals, Introduction, How JavaScript is executed, Examination review
How does mutability impact Python programming?
Mutability is a fundamental concept in Python programming that has a significant impact on the behavior and efficiency of code. It refers to the ability of an object to be modified after it is created. In Python, some data types are mutable, meaning their values can be changed, while others are immutable, meaning their values