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CodeSignal

In-Depth Exploration of Ruby Hashes and Their Practical Use

via CodeSignal

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Overview

Deepen your understanding and application of hash data structures, concentrating on their use in counting and aggregation tasks. This course will enhance your ability to efficiently access and manipulate data using Ruby hashes.

Syllabus

  • Unit 1: Introduction to Ruby Hashes
    • Updating Library Catalog Title
    • Correcting a Hash Syntax to Retrieve a Book Title
    • Checking Book Availability in Library Catalog
    • Updating and Accessing Elements in a Hash
    • Creating a Simple Library Catalog in Ruby
  • Unit 2: Counting Elements with Ruby Hashes
    • Counting Book Genres in a Library
    • Tracking Book Copies in a Library
    • Counting Book Returns in the Library
    • Count Letter Frequency in a Sentence
    • Counting Book Copies in a Collection
  • Unit 3: Data Aggregation with Ruby Hashes
    • Calculate Average Quantity of Items in Inventory
    • Finding the Minimum Quantity of a Fruit in Inventory
    • Inventory Statistics Analysis Task
    • Comparing Item Stock Levels to Average
    • Determine Maximum Vegetable Quantity in Inventory
  • Unit 4: Applying Ruby Hashes to Real-World Challenges
    • Checking and Decrementing Book Copies
    • Identify and Fix the Book Information Display Bug
    • Library Inventory Management with Hashes
    • Count Appearances of Words in a String
    • Library Management System Using Hashes

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