Ruby | Array class empty?() operation
Last Updated :
08 Jan, 2020
Array#empty?() : empty?() is a Array class method which checks if the array is empty or not.
Syntax: Array.empty?()
Parameter: Array
Return: true – if no element is present in the array; otherwise false
Code #1 : Example for empty?() method
a = [ 18 , 22 , 33 , nil , 5 , 6 ]
b = [ 1 , 4 , 1 , 1 , 88 , 9 ]
c = []
puts "empty? : #{a.empty?()}\n\n"
puts "empty? : #{b.empty?()}\n\n"
puts "empty? : #{c.empty?()}\n\n"
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Output :
empty? : false
empty? : false
empty? : true
Code #2 : Example for empty?() method
a = [ "abc" , "nil" , "dog" ]
b = [ "cow" , nil , "dog" ]
c = [ "cat" , nil , nil ]
puts "empty? : #{a.empty?()}\n\n"
puts "empty? : #{b.empty?()}\n\n"
puts "empty? : #{c.empty?()}\n\n"
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Output :
empty? : false
empty? : false
empty? : false
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