Checking if a variable is a double(float)

Question

I have two variables which sometimes contain double data structure value. How can I determine in Ruby that a variable is having double value?

For example,

a = 3.4

a.is_a_double #=> true

a = "dadadad@asdasd.net"

a.is_a_double #=> false?

Answer 1

You should be able to use any of following method to know this:

See uses:

2.2.2 :009 > a = 4.5
 => 4.5
2.2.2 :010 > a.is_a? Float
 => true
2.2.2 :011 > a.kind_of? Float
 => true
2.2.2 :015 > a.instance_of? Float
 => true

Checking if a variable is a double(float)

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