Which of the following is the correct way to create a closure using a lambda in Ruby?

easy📝 Syntax Q12 of 15

Ruby - Blocks, Procs, and Lambdas

Aclosure = lambda { |x| x * 2 }

Bclosure = def(x) x * 2 end

Cclosure = function(x) { x * 2 }

Dclosure = -> x x * 2

Step-by-Step Solution

Solution:

Step 1: Identify Ruby lambda syntax
In Ruby, lambdas can be created with lambda { |args| ... } or ->(args) { ... }.
Step 2: Check each option
closure = lambda { |x| x * 2 } uses lambda { |x| x * 2 }, which is valid. closure = def(x) x * 2 end uses invalid syntax for a lambda. closure = function(x) { x * 2 } uses JavaScript-like syntax. closure = -> x x * 2 misses parentheses in the arrow syntax, which is invalid.
Final Answer:
closure = lambda { |x| x * 2 } -> Option A
Quick Check:
Correct lambda syntax = closure = lambda { |x| x * 2 } [OK]

Quick Trick: Use lambda { |args| ... } for Ruby closures [OK]

Common Mistakes:

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