Ruby - Blocks, Procs, and Lambdas
What will be the output of this Ruby code?
my_lambda = ->(x) { x + 3 }
puts my_lambda.call(4)What will be the output of this Ruby code?
medium📝 Predict Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the lambda behavior
The lambda adds 3 to the input number x.Step 2: Calculate the output
Calling my_lambda.call(4) computes 4 + 3 = 7.Final Answer:
7 -> Option CQuick Check:
4 + 3 = 7 [OK]
Quick Trick: Call lambda with .call and input to get output [OK]
Common Mistakes:
- Forgetting to use .call to invoke lambda
- Confusing input and output values
- Expecting syntax error
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