Question

It would be great if I could create a method that counts the number of variables that contain a desired string.

Let’s say the string is “hi”, and the method needs to take in any number of variables, I’ll be entering 2 or more.

Variables:

var1 = "hi"
var2 = "bye"
var3 = "hi"

result = countvariables("hi",var1,var2,var3)

Here I have put the desired string in the variable parameters, however it can also be entered when the method is created.

Result should contain the number 2. Because 2 variables contain the string “hi”.

Is this possible?

Answer 1

def countvariables(needle, *haystack)
  haystack.count(needle)
end

var1, var2, var3 = 'hi', 'bye', 'hi'

result = countvariables('hi', var1, var2, var3)
# => 2