[Solved] What is wrong with this Ruby code? my_lambda = lambda { |x, y| x + y } puts my_lambda.call(5) — Ans: It will raise an ArgumentError | Ruby

Ruby - Blocks, Procs, and Lambdas

What is wrong with this Ruby code?

my_lambda = lambda { |x, y| x + y }
puts my_lambda.call(5)

AIt will raise an ArgumentError

BIt will print nil

CIt will print 5

DIt will raise a SyntaxError

Step-by-Step Solution

Solution:

Step 1: Check lambda argument requirements
Lambdas check arguments strictly. This lambda expects 2 arguments (x and y).
Step 2: Analyze the call with one argument
Calling my_lambda.call(5) provides only 1 argument, causing ArgumentError.
Final Answer:
It will raise an ArgumentError -> Option A
Quick Check:
Lambda argument count mismatch = ArgumentError [OK]

Quick Trick: Lambdas need exact argument count or error [OK]

Common Mistakes:

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