What are some common scenarios to use ** operator?

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I'm learning ruby on rails.

what are some common scenarios to use ** operator?

What I have tried:

I'm working through a tutorial ,and it is mentioned that during initilization we can use **operator , of a class. I'm want to know how to use this.

Posted 30-Mar-20 16:03pm

yebaha

Updated 30-Mar-20 20:19pm

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CPallini 31-Mar-20 2:18am

It is documented as 'Exponent'. possibly you should report some context, here.

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OriginalGriff · Answer 1 · 2020-03-30T20:20:00

Solution 1

The ** operator just returns X to the power of Y:

X ** Y
2 ** 2 = 4
2 ** 3 = 8
10** 2 = 100

So the only place you use it is ... when you want a number raised to a power: the square for example, or the cube.

Posted 30-Mar-20 20:20pm

OriginalGriff

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yebaha 31-Mar-20 9:08am

I was talking about double splat operator in ruby

OriginalGriff 31-Mar-20 9:13am

Yes I know. So was I ... and it's called "star" or "asterisk", not "splat".
https://www.tutorialspoint.com/ruby/ruby_operators.htm

Richard Deeming 1-Apr-20 13:56pm

The splat and double splat operators are different beasts though:
Splat goes Ruby - Relatel Developers Blog[^]
Drat! - Ruby has a Double Splat - Relatel Developers Blog[^]