How to usemap.with_index in Ruby
Below is the Code:
array = ["a", "b", "c"]
mapped_array = array.map.with_index do |element, index|
"Mapped Element #{index}: #{element}"
end
puts mapped_array
Output
Mapped Element 0: a Mapped Element 1: b Mapped Element 2: c
Explanation:
- The
map.with_index
method chains themap
method with thewith_index
method, allowing you to map elements along with their corresponding indices. - Within the block, you can perform any desired mapping operation using the element and index.
How to map/collect with index in Ruby?
Mapping or collecting elements with their corresponding indices in Ruby is a common requirement in various programming scenarios. Ruby provides several options to suit your needs.
Let’s explore four approaches to map or collect elements with their indices:
Table of Content
- Approach 1: Using each_with_index
- Approach 2: Using map.with_index
- Approach 3: Using Enumerable#each_with_index
- Approach 4: Using Range#each_with_index
Contact Us