Ruby | Array one?() function
Last Updated :
26 Dec, 2022
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Array#one?() : one?() is a Array class method which checks whether the array is having only one array element.
Syntax: Array.one?() Parameter: Array Return: true – if array has only one element otherwise return false.
Example #1 :
- Ruby
Ruby
# Ruby code for one?() method# declaring arraya = [18, 22, 33, nil, 5, 6]# declaring arrayb = [1, 4, 1, 1, 88, 9]# declaring arrayc = [2]# one? method exampleputs "one?() method form : #{a.one?()}\n\n"puts "one?() method form : #{b.one?()}\n\n"puts "one?() method form : #{c.one?()}\n\n" |
Output :
one?() method form : false one?() method form : false one?() method form : true
Example #2 :
- Ruby
Ruby
# Ruby code for one?() method# declaring arraya = ["abc", "nil", "dog"]# declaring arrayb = ["cow"]# declaring arrayc = ["cow", nil, "dog"]# one? method exampleputs "one?() method form : #{a.one?()}\n\n"puts "one?() method form : #{b.one?()}\n\n"puts "one?() method form : #{c.one?()}\n\n" |
Output :
one?() method form : false one?() method form : false one?() method form : true
