Which of the following correctly composes two Procs proc_a and proc_b so that proc_a runs first and its result is passed to proc_b?

easy📝 Syntax Q3 of 15

Ruby - Functional Patterns in Ruby

Which of the following correctly composes two Procs proc_a and proc_b so that proc_a runs first and its result is passed to proc_b?

Acombined = proc_b >> proc_a

Bcombined = proc_a + proc_b

Ccombined = proc_a >> proc_b

Dcombined = proc_a * proc_b

Step-by-Step Solution

Solution:

Step 1: Understand Proc composition
The operator >> composes two Procs so that the output of the first is input to the second.
Step 2: Apply correct operator
Using proc_a >> proc_b means proc_a runs first, then proc_b receives its output.
Final Answer:
combined = proc_a >> proc_b -> Option C
Quick Check:
Check operator semantics [OK]

Quick Trick: Use >> to chain Procs in order [OK]

Common Mistakes:

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