What's up, guys?
Today, I want to share with you how to use a ruby method to return the absolue value of an integer value in Ruby.
What's an absolute value?
I'm not a math geek, but this answer is kinda simple. The absolute value of a number x is its non-negative version, so, it's the number without the negative sign.
For example, the absolute value of the number -4 is 4. The absolute value of the positive 4 is also 4. It doesn't matter the parameter, the absolute value is always the positive version.
abs belongs to the
numeric class. In Ruby, the numeric class is the highest-level class for numbers.
abs method returns the absolute value of a given number.
magnitude method is an alias for the
The syntax is very simple:
number is the value we want to check the absolute version.
. is how we call the method.
abs is the method.
Get down to business
Let's check it out:
irb(main):006:0> -9.abs => 9
The absolute value of a positive number is the number itself
irb(main):005:0> 9.abs => 9
abs method also works with the float type:
rb(main):007:0> -3.4.abs => 3.4 irb(main):008:0> 3.4.abs => 3.4
NoMethodError is displayed if it's used with a data type that it doesn't inherit from the
irb(main):009:0> "1".abs Traceback (most recent call last): 4: from /usr/local/bin/irb:23:in `<main>' 3: from /usr/local/bin/irb:23:in `load' 2: from /var/lib/gems/2.5.0/gems/irb-1.1.0/exe/irb:11:in `<top (required)>' 1: from (irb):9 NoMethodError (undefined method `abs' for "1":String)
- Syntax: numericvalue.abs()
- Parameter: numeric value which is to be converted to absolute value.
- Return: absolute value of the passed numeric value.
In this article, it was possible to learn and practice how to get the absolute value of numbers in Ruby.
Hope it was useful.
That's for today. Let me know if you have any questions.
By the way, you help me a lot if you like and/or share this article.