CODEWITHSUNDEEP
ruby
Z.Wei
Z.Wei

Reputation: 3938

Why "require" keyword is followed by an "instance variable"?

I am learning Ruby and reading a piece of code. I don't understand this line:

require @a_variable

In my limited knowledge on Ruby, "require" is used to import modules, classes, or whatever stuff in other files. What is the usage there? I browsed a lot but can't find an explanation. Thanks.

Upvotes: 1

Views: 39

Answers (1)

Ursus
Ursus

Reputation: 30056

Here's the thing. You have to pass a string to require. If that's a string literal or an expression which evaluates to a string doesn't matter.

require 'set'

or

set = 'set'
require set

is equivalent

Upvotes: 3

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