Ruby has a nice little keyword called unless, that checks the opposite of if. So, you are probably used to a code like this:
If you haven't used present? before, you can in fact turn the above unless into a more familiar and easy to understand if statement:
So, in most cases when you are using unless with a negative condition, you can use present? and if instead. I find it way easier to read.
present? does the opposite of blank?. So, you will get the following:
return customer.first_name unless customer.nil?
If you haven't used present? before, you can in fact turn the above unless into a more familiar and easy to understand if statement:
return customer.first_name if customer.present?
So, in most cases when you are using unless with a negative condition, you can use present? and if instead. I find it way easier to read.
present? does the opposite of blank?. So, you will get the following:
nil.present? #=> false
[].present? #=> false
"hello".present? => true
["a"].present? #=> true
Hope it helps!
