[Solved] Identify the error in this Ruby code that tries to compose two Procs:p1 = Proc.new { |x| x * 2 } p2 = Proc.new { |y| y + 5 } combined = p1 >> p2.call puts combined.call(3) | Ruby

Ruby - Functional Patterns in Ruby

Identify the error in this Ruby code that tries to compose two Procs:

p1 = Proc.new { |x| x * 2 }
p2 = Proc.new { |y| y + 5 }
combined = p1 >> p2.call
puts combined.call(3)

ASyntax error due to missing parentheses

BUsing wrong operator for composition

CMissing block parameters in p1

DCalling p2 immediately instead of composing

Step-by-Step Solution

Solution:

Step 1: Check how p2 is used in composition
The code uses p2.call which calls p2 immediately, returning a value, not a Proc.
Step 2: Understand correct composition usage
To compose, use p1 >> p2 without calling p2. Calling p2 breaks composition.
Final Answer:
Calling p2 immediately instead of composing -> Option D
Quick Check:
Compose Procs without calling them [OK]

Quick Trick: Do not call Procs when composing, just use >> [OK]

Common Mistakes:

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