[Solved] Why do some Ruby methods have both bang and non-bang versions, like gsub and gsub!? — Ans: To provide both safe (non-destructive) and destructive versions for flexibility. | Ruby

Ruby - Methods

Why do some Ruby methods have both bang and non-bang versions, like gsub and gsub!?

ATo mark methods that only work on strings.

BBecause bang methods are deprecated versions.

CTo indicate methods that always raise exceptions.

DTo provide both safe (non-destructive) and destructive versions for flexibility.

Step-by-Step Solution

Solution:

Step 1: Understand purpose of bang and non-bang methods
Bang methods usually modify the object directly (destructive), while non-bang methods return a new object (non-destructive).
Step 2: Reason why both versions exist
Having both versions gives programmers choice between changing original data or keeping it unchanged for safety.
Final Answer:
To provide both safe (non-destructive) and destructive versions for flexibility. -> Option D
Quick Check:
Bang vs non-bang = destructive vs non-destructive [OK]

Quick Trick: Bang methods = destructive; non-bang = safe copy [OK]

Common Mistakes:

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Why do some Ruby methods have both bang and non-bang versions, like gsub and gsub!?