ruby - 替换数组中的单个元素

Question

我有一个包含独特元素的数组。有没有办法在不使用其索引值的情况下将其中的某个值替换为另一个值？

例子:

array = [1,2,3,4]
if array.include? 4
#  "replace 4 with 'Z'"
end
array #=> [1,2,3,'Z']

hash = {"One" => [1,2,3,4]}
if hash["One"].include? 4
#  "replace 4 with 'Z'"
end
hash #=> {"One" => [1,2,3,'Z']}

Answer 1

p array.map { |x| x == 4 ? 'Z' : x }

# => [1, 2, 3, 'Z']