[Solved] Identify the error in this Ruby code: profile = { username: 'john_doe', email: 'john@example.com' } puts profile[username] | Ruby

Ruby - Hashes

Identify the error in this Ruby code:

profile = { username: 'john_doe', email: 'john@example.com' }
puts profile[username]

Aemail key is missing

Busername should be a symbol or string key: profile[:username]

CHash keys must be strings only

Dputs cannot print hash values

Step-by-Step Solution

Solution:

Step 1: Understand hash key access
Hash keys must be referenced as symbols or strings inside brackets.
Step 2: Identify error
profile[username] treats username as a variable, which is undefined.
Step 3: Correct usage
Use profile[:username] to access the value.
Final Answer:
username should be a symbol or string key: profile[:username] -> Option B
Quick Check:
Use symbols or strings as hash keys [OK]

Quick Trick: Use symbols or strings as keys in brackets [OK]

Common Mistakes:

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