Which of the following is the correct way to create a Ruby hash with a symbol key named :color and a string value "blue"?

easy📝 Conceptual Q1 of 15

Ruby - Hashes

Which of the following is the correct way to create a Ruby hash with a symbol key named :color and a string value "blue"?

A{ color: "blue" }

B{ :color => blue }

C{ "color" => :blue }

D{ color => "blue" }

Step-by-Step Solution

Solution:

Step 1: Understand symbol key syntax
In Ruby, symbol keys can be written as key: value or :key => value. The first option uses the newer syntax.
Step 2: Check value type correctness
The value should be a string "blue" enclosed in quotes. { color: "blue" } correctly uses color: "blue".
Final Answer:
{ color: "blue" } -> Option A
Quick Check:
Symbol key hash = { color: "blue" } [OK]

Quick Trick: Use colon after symbol for key: { key: value } [OK]

Common Mistakes:

MISTAKES

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