如何连接条件

Question

有没有一种更优雅的方式在Ruby中编写它？

def tutorial_completed? 
    people.any? && projects.any? && invoices.any? 
end 

Answer 1

def tutorial_completed? 
    [people, projects, invoices].all?(&:any?) 
end 

Answer 2

我会做如下：

[people,projects,invoices].all? {|i| i.any? } 

演示

people = [true] 
projects = [false] 
invoices = [true,12] 
[people,projects,invoices].all? {|i| i.any? } 
# => false