Scanning an array of strings for match in Ruby

Question

I have an array:

a = ["http://design.example.com", "http://www.domcx.com", "http://subr.com"]

and then I want to return true if one of the elements in that array matches the string:

s = "example.com"

I tried with include? and any?.

a.include? s
a.any?{|w| s=~ /#{w}/}

I don't know how to use it here. Any suggestions?

Answer 1

You can use any? like:

[
  "http://design.example.com",
  "http://www.domcx.com",
  "http://subr.com"
].any?{ |s| s['example.com'] }

Substituting your variable names:

a = [
  "http://design.example.com",
  "http://www.domcx.com",
  "http://subr.com"
]
s = "example.com"
a.any?{ |i| i[s] }

You can do it several other ways also, but the advantage using any? is it will stop as soon as you get one hit, so it can be much faster if that hit occurs early in the list.

Answer 2

How is the below:

a=["http://design.example.com", "http://www.domcx.com", "http://subr.com"]
s= "sus"
p a.any? { |w| w.include? s } #=> false

a=["http://design.example.com", "http://www.domcx.com", "http://subr.com"]
s= "design.example"
p a.any? { |w| w.include? s } #=>true

a=["http://design.example.com", "http://www.domcx.com", "http://subr.com"]
s= "desingn.example"
p a.any? { |w| w.include? s } #=>false

a=["http://design.example.com", "http://www.domcx.com", "http://subr.com"]
s= "example"
p a.any? { |w| w.include? s } #=>true

a=["http://design.example.com", "http://www.domcx.com", "http://subr.com"]
s= "example.com"
p a.any? { |w| w.include? s } #=>true