Sam 山
Reputation: 42863
What is the point of Ruby's @@double_at_variable?
I rarely use the @@double_at_variable, don't even know what to call it. When I dig into gems and os projects I usually come across this variable and it throws me for a loop.
What does it do that the other ruby variables cannot achieve and what is usually the application in projects such as Rails?
Upvotes: 0
Views: 182
Answers (1)
Pablo Fernandez
Reputation: 105258
The double @ variables are class variables.
That means, there is only one of them per class unlike common instance variables (one per object)
Upvotes: 5
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