ruby - 检查数组中的所有值是否都以字符串开头

Question

我有一系列链接:

urls =
[
  ["http://s3.amazonxaws.com/bb_images/uk/media_images/2/1-veXRiLqrxPbguaxFIcFbPA.png"],
  ["http://s3.amazonaws.com/bb_images/uk/media_images/2/1-veXRiLqrxPbguaxFIcFbPA.png"]
]

如果所有链接都以 "http://s3.amazonaws.com" 开头，我如何返回 true？

我试过:

if urls.any? { |url| url.include?('http://s3.amazonaws.com/') }
     #execute code
else
     #execute else code
end

但在某些情况下它不会返回true 或false。

Answer 1

urls.flatten.all?{|s| s.start_with?("http://s3.amazonaws.com")}