How to Convert a Map to an Array of Values in Ruby - Step by Step Examples

How to Convert a Map to an Array of Values in Ruby ?

Answer

To convert a hash to an array of values in Ruby, you can use the values method. This method returns an array of all values in the hash.

✐ Examples

1 Converting a Hash to an Array of Values Using values Method

We can convert a hash to an array of values in Ruby using the values method, which provides an array of all values in the hash.

For example,

We start by declaring and initializing a hash named my_hash with some key-value pairs. In this example, the hash has string keys and integer values.
We use the values method to get an array of the values in the hash.
We store the array of values in a variable named values_array.
We print the values to the console using the puts function to verify the conversion.

Ruby Program

my_hash = {
  'one' => 1,
  'two' => 2,
  'three' => 3
}

# Convert hash to an array of values
values_array = my_hash.values

# Print the values
puts "Values: #{values_array}"

Output

Values: [1, 2, 3]

2 Converting an Empty Hash to an Array of Values

We can also convert an empty hash to an array of values in Ruby using the values method, which returns an empty array when the hash is empty.

For example,

We start by declaring an empty hash named empty_hash with string keys and integer values.
We use the values method to get an array of the values in the empty hash.
We store the array of values in a variable named empty_values_array.
We print the values to the console using the puts function to verify that the array is empty.

Ruby Program

empty_hash = {}

# Convert empty hash to an array of values
empty_values_array = empty_hash.values

# Print the values
puts "Values: #{empty_values_array}"

Output

Values: []

3 Converting a Hash to an Array of Values After Adding Elements

We can convert a hash to an array of values in Ruby after adding elements using the values method, which provides an updated array of all values in the hash.

For example,

We start by declaring an empty hash named dynamic_hash with string keys and integer values.
We add some key-value pairs to the hash using the hash's index notation.
We use the values method to get an array of the values in the hash after adding elements.
We store the array of values in a variable named dynamic_values_array.
We print the values to the console using the puts function to verify the updated list of values.

Ruby Program

dynamic_hash = {}

# Add elements to the hash
dynamic_hash['one'] = 1
dynamic_hash['two'] = 2
dynamic_hash['three'] = 3

# Convert hash to an array of values after adding elements
dynamic_values_array = dynamic_hash.values

# Print the values
puts "Values: #{dynamic_values_array}"

Output

Values: [1, 2, 3]

Summary

In this tutorial, we learned How to Convert a Map to an Array of Values in Ruby language with well detailed examples.

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How to Convert a Map to an Array of Values in Ruby - Step by Step Examples