Question

In my Ruby program, I have an array of five strings, and I want to check if each one of the elements of that array match to a given requirement, for example:

a = ['', '', '', '']
a.inject(:blank?) # Will return true if (and only if) all elements of a are blank

I’m asking this question because Ruby has a pretty large standard API with a lot of pre-written syntactical sugar, which I want to know and don’t want to reinvent.

Answer 1

There is a very concise way:

array.all? &:blank?

Study Enumerable and learn how to use Enumerators and you’ll be speaking the most pleasant dialect of Ruby in no time.