How to useeach_with_index in Ruby
Below is the Code:
array = ["a", "b", "c"]
array.each_with_index do |element, index|
puts "Element: #{element}, Index: #{index}"
end
Output
Element: a, Index: 0 Element: b, Index: 1 Element: c, Index: 2
Explanation:
- The
each_with_index
method iterates over each element in the array, providing both the element and its index to the block. - Within the block, you can perform any desired action 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