Blocks and Iterators - Ruby Typing CST Test

Blocks and Iterators — Ruby Code

Demonstrates Ruby's elegant syntax with blocks, classes, and enumerable methods.

class Calculator
	def initialize
		@history = []
	end

	def add(a, b)
		result = a + b
		@history << "#{a} + #{b} = #{result}"
		result
	end

	def multiply(a, b)
		result = a * b
		@history << "#{a} * #{b} = #{result}"
		result
	end

	def history
		@history.each_with_index do |operation, index|
		puts "#{index + 1}. #{operation}"
		end
	end
end

# Array operations with blocks
numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

even_numbers = numbers.select { |n| n.even? }
squares = numbers.map { |n| n ** 2 }
sum = numbers.reduce(0) { |acc, n| acc + n }

puts "Even numbers: #{even_numbers}"
puts "Squares: #{squares}"
puts "Sum: #{sum}"

# Calculator usage
calc = Calculator.new
calc.add(5, 3)
calc.multiply(4, 6)
calc.history

Ruby Language Guide

Ruby is a dynamic, object-oriented, high-level programming language designed for simplicity, productivity, and readability. It emphasizes developer happiness and convention over configuration, widely used for web development, scripting, automation, and backend systems.

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