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Unified Modeling Language (UML) diagrams

Unified Modeling Language (UML) diagrams are graphical representations used in software engineering to visually model and describe systems. They provide a standardized way of visualizing…

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How the ANY? method works – Ruby

This is a Ruby method definition for `any?`. Here’s what each line does: 1. `def any?(&block)`: This line defines a method named `any?` that takes…

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Creational design patterns

Let’s delve deeper into each of these creational design patterns: 1. **Simple Factory:** – **Purpose:** This pattern helps in creating instances of different classes based…

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Composition, Inheritance, and their differences with examples – Ruby

Let’s break down composition, inheritance, and their differences with examples. ### Composition: **Definition:** Composition is a principle in object-oriented programming (OOP) that allows one class…

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What are Private Methods? – Ruby

A private method in object-oriented programming is a method that can only be called from within the same class or from its subclasses. It cannot…

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4 Principles of OOP in Ruby

Let’s break down these concepts in a straightforward manner: 1. **Encapsulation:** Think of an object (like a class in programming) as a little box. Encapsulation…

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Explanation on how the ‘all?’ method works in Ruby

def all?(&block) each { |item| return false unless block.call(item) } true end   This is a Ruby method definition for `all?`. Here’s what each line…

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Difference between Stack and Heap in C

In C, the stack and the heap are two areas of memory used for different purposes. Here are the key differences between the stack and…

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DOM SELECTORS

1) Universal Selector The universal selector is denoted by * that matches all elements of any type: * The following example uses the querySelector() selects the first element in…

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Bootstrap 5 CheatSheet

COLORS & TYPOGRAPHY lead - makes the text a paragraph text that is slightly larget thatn th usual paragraph text text-center, text-start, text-end - positions…