Ruby - Hashes
Why might using a hash as named parameters be less safe than using Ruby's keyword arguments introduced in Ruby 2.0+?
Why might using a hash as named parameters be less safe than using Ruby's keyword arguments introduced in Ruby 2.0+?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Compare hashes vs keyword arguments
Hashes accept any keys silently; typos create unexpected keys.Step 2: Understand keyword argument safety
Keyword arguments raise errors on unknown or missing keys, preventing silent bugs.Final Answer:
Hashes allow any keys, so typos won't raise errors -> Option AQuick Check:
Hash keys are flexible but less safe [OK]
Quick Trick: Keyword args catch typos; hashes do not [OK]
Common Mistakes:
- Thinking hashes enforce key types
- Assuming hashes prevent default values
- Believing hashes do type checking
Master "Hashes" in Ruby
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