Directly accessing an instance variable vs. Using an accessor method
Solution 1:
self.attribute
calls the method attribute
.self.attribute = value
calls the method attribute=
with the argument value
.@attribute
and @attribute = value
get/set the value of the instance variable @attribute
.
So basically they're two entirely different things.
However if you call attr_accessor :attribute
it defines the method attribute
to return @attribute
and the method attribute=(value)
to set @attribute = value
. So in that case, there is no difference.
Solution 2:
"Accessing instance variable directly is about two times faster than accessing them with accessor methods"
Check out the: https://www.greyblake.com/blog/2012-09-01-ruby-perfomance-tricks/