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How does Ruby's dynamic typing help when writing a method that accepts different types of inputs?

hard📝 Application Q15 of 15
Ruby - Variables and Data Types
How does Ruby's dynamic typing help when writing a method that accepts different types of inputs?
Consider this method:
def describe(value)
  if value.is_a?(String)
    "String: #{value}"
  elsif value.is_a?(Integer)
    "Integer: #{value}"
  else
    "Other type"
  end
end

puts describe(10)
puts describe("hello")
puts describe(3.14)
AThe method works because Ruby allows checking types at runtime.
BThe method requires type declarations to run.
CThe method only works for strings.
DThe method fails because Ruby requires fixed types.
Step-by-Step Solution
Solution:
  1. Step 1: Understand dynamic typing and type checking

    Ruby lets you check an object's type during execution using methods like is_a?.
  2. Step 2: Analyze method behavior with different inputs

    The method uses is_a? to handle strings, integers, or others dynamically without fixed types.
  3. Final Answer:

    The method works because Ruby allows checking types at runtime. -> Option A
  4. Quick Check:

    Dynamic typing + runtime checks enable flexible methods [OK]
Quick Trick: Ruby checks types during run, enabling flexible methods [OK]
Common Mistakes:
  • Thinking Ruby needs fixed types for methods
  • Assuming method fails on mixed input types
  • Confusing dynamic typing with no type checks

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