Ruby - Functional Patterns in Ruby
Which Ruby code snippet correctly demonstrates chaining methods to transform a string?
Which Ruby code snippet correctly demonstrates chaining methods to transform a string?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Review method chaining syntax
In Ruby, method chaining uses the dot operator to call methods sequentially on the same object.Step 2: Analyze each option
"example".strip.upcase.reverse uses dots correctly: strip, then upcase, then reverse. Options B and C use commas or semicolons incorrectly, and D lacks dots.Final Answer:
"example".strip.upcase.reverse -> Option BQuick Check:
Method chaining requires dots between methods [OK]
Quick Trick: Use dots to chain methods in Ruby [OK]
Common Mistakes:
- Using commas or semicolons instead of dots
- Omitting dots between method calls
- Misplacing method calls without chaining syntax
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