How to check if a Specific Item is present in the Set in Ruby - Step by Step Examples

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How to check if a Specific Item is present in the Set in Ruby ?

Answer

To check if a specific item is present in a Set in Ruby, you can use the include? method.

✐ Examples

1 Check if Item is Present

In this example,

We define a Set named my_set containing elements of a specific type.
We use the include? method of the Set to check if a specific item is present.
The include? method returns true if the item is present in the Set, otherwise it returns false.
Finally, we print the result to standard output.

Ruby Program

require 'set'

my_set = Set.new(["apple", "banana", "orange", "grape", "melon"])

# Check if item is present
item = "banana"
is_present = my_set.include?(item)

# Print result
puts "Is #{item} present in the Set? #{is_present}"

Output

Is banana present in the Set? true

2 Check if Item is Not Present

In this example,

We define a Set named my_set containing elements of a specific type.
We use the include? method of the Set to check if a specific item is not present.
The include? method returns false if the item is not present in the Set.
Finally, we print the result to standard output.

Ruby Program

require 'set'

my_set = Set.new(["apple", "banana", "orange", "grape", "melon"])

# Check if item is not present
item = "peach"
is_not_present = !my_set.include?(item)

# Print result
puts "Is #{item} not present in the Set? #{is_not_present}"

Output

Is peach not present in the Set? true

Summary

In this tutorial, we learned How to check if a Specific Item is present in the Set in Ruby language with well detailed examples.

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