如何将红宝石中的计数增加1？

Question

I am using the below code to get the number of records.

self.size.to_s

How can i add '1' to the size from above?

Answer 1

Integer#next ：

self.size.next.to_s

Answer 2

(self.size + 1).to_s ＃像这样

Answer 3

You can either add it before converting to string

(self.size + 1).to_s

Or if you already have a string

"2".to_i + 1

Combined this could be something like

self.size.to_s.to_i + 1

but that is hardly practical