Web Reference: This video is one in a series of videos where we'll be looking at programming in ruby. The course is designed for new programmers, and will introduce common programming topics using the ruby... Learn how to use hashes in Ruby to store and organize data with key-value pairs. This tutorial covers creating, accessing, modifying, and iterating over hashes. To be usable as a Hash key, objects must implement the methods hash and eql?. Note: this requirement does not apply if the Hash uses compare_by_identity since comparison will then rely on the keys’ object id instead of hash and eql?.
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