How to Print a Map in Ruby

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How to Print a Map in Ruby ?

Answer

To print a map in Ruby, you can iterate over the map using the each method or a for loop to print each key-value pair.

✐ Examples

1 Printing a Map Using each Method

We can print a map in Ruby by iterating over the map using the each method and printing each key-value pair.

For example,

We start by declaring and initializing a hash named my_map with some key-value pairs. In this example, the hash has string keys and integer values.
We use the each method to iterate over each key-value pair in the hash. The each method takes a block that defines the operation to be performed on each element.
Inside the block, we print the key and value of each pair using the puts function.

Ruby Program

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

# Print the map using each method
my_map.each do |key, value|
  puts "#{key}: #{value}"
end

Output

one: 1
two: 2
three: 3

2 Printing a Map Using for Loop

We can print a map in Ruby by iterating over the map using a for loop and printing each key-value pair.

For example,

We start by declaring and initializing a hash named my_map with some key-value pairs. In this example, the hash has string keys and integer values.
We use a for loop to iterate over each key-value pair in the hash. The loop variable key and value represent each key and value in the hash.
Inside the loop, we print the key and value of each pair using the puts function.

Ruby Program

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

# Print the map using a for loop
for key, value in my_map
  puts "#{key}: #{value}"
end

Output

one: 1
two: 2
three: 3

3 Printing a Map Using map Method

We can print a map in Ruby by iterating over the map using the map method and printing each key-value pair.

For example,

We start by declaring and initializing a hash named my_map with some key-value pairs. In this example, the hash has string keys and integer values.
We use the map method to iterate over each key-value pair in the hash. The map method takes a block that defines the operation to be performed on each element.
Inside the block, we print the key and value of each pair using the puts function.

Ruby Program

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

# Print the map using map method
my_map.map do |key, value|
  puts "#{key}: #{value}"
end

Output

one: 1
two: 2
three: 3

Summary

In this tutorial, we learned How to Print a Map in Ruby language with well detailed examples.

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How to Print a Map in Ruby