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Which symbol is used to start block parameters in Ruby?

easy📝 Conceptual Q2 of 15
Ruby - Blocks, Procs, and Lambdas

Which symbol is used to start block parameters in Ruby?

A[]
B<>"
C()
D||
Step-by-Step Solution
Solution:

  1. Step 1: Identify block parameter syntax

    Ruby uses vertical bars | | to enclose block parameters.

  2. Step 2: Match options

    Only || shows vertical bars, which is correct syntax.

  3. Final Answer:

    || -> Option D

  4. Quick Check:

    Block parameters start with vertical bars = || [OK]
Quick Trick: Block parameters are enclosed in vertical bars |param| [OK]
Common Mistakes:
  • Using parentheses instead of vertical bars
  • Confusing block parameters with array brackets
  • Using angle brackets mistakenly

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