{"id":227550,"date":"2024-07-11T20:08:07","date_gmt":"2024-07-11T20:08:07","guid":{"rendered":"https:\/\/namso-gen.co\/blog\/?p=227550"},"modified":"2024-07-11T20:08:07","modified_gmt":"2024-07-11T20:08:07","slug":"how-to-access-hash-value-in-ruby-2","status":"publish","type":"post","link":"https:\/\/namso-gen.co\/blog\/how-to-access-hash-value-in-ruby-2\/","title":{"rendered":"How to access hash value in Ruby?"},"content":{"rendered":"

# How to access hash value in Ruby?<\/p>\n

In Ruby, a hash is a collection of key-value pairs, also known as an associative array. Each key in the hash is unique, and it is used to retrieve its associated value. Accessing hash values in Ruby is straightforward and can be done in a few different ways.<\/p>\n

To access the value of a specific key in a hash, you can use either the square bracket notation or the `fetch` method. Let’s explore both of these approaches.<\/p>\n

## Square bracket notation<\/p>\n

The square bracket notation is the most commonly used method to access hash values in Ruby. Here’s an example:<\/p>\n

“`ruby
\nhash = { name: ‘John’, age: 25, city: ‘New York’ }<\/p>\n

# Retrieve the value associated with the key “:name”
\nputs hash[:name]
\n“`<\/p>\n

**The answer to the question “How to access hash value in Ruby?” is by using square bracket notation with the key name inside the brackets.**<\/p>\n

In the above example, we create a hash with three key-value pairs. By using `hash[:name]`, we access the value associated with the key `:name` and print it to the console. In this case, the output will be `’John’`.<\/p>\n

## The `fetch` method<\/p>\n

The `fetch` method is similar to the square bracket notation but allows additional customization options. Here’s an example:<\/p>\n

“`ruby
\nhash = { brand: ‘Apple’, model: ‘iPhone 12’, color: ‘Blue’ }<\/p>\n

# Retrieve the value associated with the key “:color”
\nputs hash.fetch(:color)
\n“`<\/p>\n

By calling `hash.fetch(:color)`, we retrieve the value associated with the key `:color` and print it to the console. In this case, the output will be `’Blue’`.<\/p>\n

## Frequently asked questions<\/p>\n

\n
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