Enhance Your Understanding with Ruby Programming Concept Cards for quick learning
A dynamic, object-oriented programming language known for its simplicity and productivity.
A named storage location that holds a value, which can be changed during program execution.
The classification of data that determines the operations that can be performed on it. Ruby has built-in data types like strings, numbers, booleans, arrays, and hashes.
A sequence of characters enclosed in single or double quotes. Ruby provides various methods to manipulate strings.
A whole number without a fractional or decimal part. Ruby supports both positive and negative integers.
A number with a fractional or decimal part. Ruby uses floating-point numbers to represent real numbers.
A data type that represents either true or false. Used for logical operations and conditional statements.
An ordered collection of elements, accessed by their index. Ruby arrays can contain different data types and can be dynamically resized.
A collection of key-value pairs, where each unique key is associated with a value. Also known as dictionaries or associative arrays.
A symbol or keyword that performs an operation on one or more operands. Ruby supports arithmetic, comparison, logical, and assignment operators.
The order in which statements are executed in a program. Ruby provides if-else, switch, and loop statements for controlling the flow of execution.
A statement that performs different actions based on a condition. In Ruby, if-else and case statements are used for conditional execution.
A control flow statement that repeatedly executes a block of code until a certain condition is met. Ruby provides while, until, and for loops.
A reusable block of code that performs a specific task. Ruby methods can have parameters and return values.
A blueprint for creating objects that define their properties and behaviors. Ruby supports object-oriented programming with classes and inheritance.
An instance of a class that encapsulates data and behavior. Objects are created from classes and can interact with each other.
A container for organizing similar methods and constants. Ruby modules can be mixed into classes to provide additional functionality.
An error or unexpected event that occurs during program execution. Ruby provides exception handling mechanisms to gracefully handle errors.
Reading from and writing to files using Ruby. File operations include opening, closing, reading, writing, and manipulating files.
A sequence of characters that defines a search pattern. Ruby supports regular expressions for pattern matching and text manipulation.
Packages or libraries that extend the functionality of Ruby. Gems can be easily installed and used in Ruby projects.
The process of finding and fixing errors or bugs in a program. Ruby provides debugging techniques like printing debug statements and using a debugger.
Recommended coding conventions and techniques for writing clean, maintainable, and efficient Ruby code.
The set of rules that define the structure and format of a programming language. Ruby has a concise and readable syntax.
Text in a program that is ignored by the interpreter or compiler. Ruby supports single-line and multi-line comments for documentation and code readability.
Named containers that store values in memory. Ruby variables are dynamically typed and do not require explicit declaration.
Named values that cannot be changed once assigned. Ruby constants are typically used for values that should not be modified.
Symbols or keywords that perform operations on operands. Ruby supports arithmetic, comparison, logical, assignment, and bitwise operators.
Operators used for comparing values and making decisions. Ruby has operators like ==, !=, >, <, >=, <= for conditional statements.
Operators used for combining conditions and performing logical operations. Ruby has operators like &&, ||, ! for logical expressions.
Operators used for assigning values to variables. Ruby has operators like =, +=, -=, *=, /= for assignment operations.
Operators used for performing mathematical calculations. Ruby has operators like +, -, *, /, % for addition, subtraction, multiplication, division, and modulus.
The process of combining two or more strings into a single string. In Ruby, the + operator is used for string concatenation.
Accessing elements in an array using their index. Ruby arrays are zero-based, meaning the first element has an index of 0.
Unique identifiers used to access values in a hash. Ruby hashes store key-value pairs and allow efficient retrieval of values based on keys.
Values passed to a method when it is called. Ruby methods can have zero or more parameters, which are used to provide input to the method.
Values returned by a method after it completes its execution. Ruby methods can have a return statement to specify the value to be returned.
The process of creating a new class based on an existing class. Ruby supports single inheritance, where a class inherits properties and behaviors from a parent class.
The process of including a module in a class to extend its functionality. Ruby modules can be mixed into multiple classes, providing code reusability.
The process of handling errors or exceptions that occur during program execution. Ruby provides try-catch blocks to catch and handle exceptions.
Reading data from a file using Ruby. File reading operations include opening a file, reading its contents, and closing the file.
Writing data to a file using Ruby. File writing operations include opening a file, writing data to it, and closing the file.
Searching for patterns in text using regular expressions. Ruby provides methods like match and scan for pattern matching and extraction.
The process of installing Ruby gems for use in a project. Ruby gems can be installed using the gem command or by specifying them in the project's Gemfile.
Methods and tools used for finding and fixing errors in a program. Ruby provides debugging techniques like printing debug statements, using a debugger, and logging.
The quality of code that makes it easy to understand and maintain. Ruby emphasizes code readability with its concise and expressive syntax.
The ability to reuse code in multiple parts of a program. Ruby supports code reusability through classes, modules, and inheritance.
The optimization of code to improve its performance and resource usage. Ruby provides various techniques for writing efficient code.
The process of dealing with errors or exceptions in a program. Ruby provides exception handling mechanisms to gracefully handle errors and prevent program crashes.
The process of creating and maintaining documentation for a program. Ruby supports documentation generation using tools like RDoc and YARD.
The process of verifying the correctness and functionality of a program. Ruby has testing frameworks like RSpec and MiniTest for writing automated tests.
The management of changes to a program using version control systems. Ruby projects can be easily managed with Git, SVN, or other version control tools.
Software tools used for debugging and troubleshooting programs. Ruby provides debugging tools like Pry, Byebug, and RubyMine.
The process of improving the performance of a program. Ruby provides techniques like code profiling and optimization to enhance program speed.
The process of restructuring existing code to improve its readability, maintainability, and efficiency. Ruby supports code refactoring with tools like RuboCop and Reek.