CODEWITHSUNDEEP
rubyscopelocal-variables
Exotic Brain
Exotic Brain

Reputation: 21

Variable scope within a block in ruby

I'm struggling with variable scope within a block in ruby. I learnt that do..end that follows while, until, or for loops are not blocks because while, until, or for are not method calls. So they don't create their own inner scope. but this example confused me

loop do
  b = 2
  p b # => 2
  break
end
p b

Here in this example b is initialized with the number 2 inside the do..end. The puts method is called with the variable b passed to it as an argument, and it through an NameError. saying that b is undefined local variable, but as i said before the do..end that follows while, until, or for loops don't create their own inner scope

Upvotes: 2

Views: 361

Answers (1)

Jörg W Mittag
Jörg W Mittag

Reputation: 369624

but as i said before the do..end that follows while, until, or for loops don't create their own inner scope

Exactly. But there is no while, until, or for loop in your code.

Upvotes: 1

Related Questions