[Solved] What does the Ruby method inject do when used on an array? — Ans: It combines all elements into a single value using a block. | Ruby

Ruby - Enumerable and Collection Processing

What does the Ruby method inject do when used on an array?

AIt combines all elements into a single value using a block.

BIt sorts the array in ascending order.

CIt removes duplicate elements from the array.

DIt returns the first element of the array.

Step-by-Step Solution

Solution:

Step 1: Understand the purpose of inject
The inject method takes all elements of an array and combines them into one value using the block provided.
Step 2: Compare with other options
Sorting, removing duplicates, or returning the first element are different methods like sort, uniq, or first.
Final Answer:
It combines all elements into a single value using a block. -> Option A
Quick Check:
inject combines elements = C [OK]

Quick Trick: Remember: inject reduces many to one value [OK]

Common Mistakes:

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What does the Ruby method inject do when used on an array?