Please explain me this code!!

Question

name = 'Fisher'
case name
when /fish/i then puts "Something is fishy here"
when 'Smith' then puts "Your name is Smith"
end

#=> Something is fishy here

i don't understand
when /fish/i then puts "Something is fishy here"

Thanks

Answer 1

When you do:

case name

The program inspects the string stored in variable name to find if:

/fish/i

In the sense that the string contains a sequence of characters which form the string "fish". If it does, then:

puts "Something is fishy here"

Hence the program outputs the result.

Answer 2

thanks i got it !!

/fish/i it s call regular expression?