Ruby - Basics and Runtime
Given a list of mixed values, how can you create a hash mapping each value to its class using Ruby's object model?
Given a list of mixed values, how can you create a hash mapping each value to its class using Ruby's object model?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the goal
We want a hash where keys are values and values are their classes.Step 2: Use Ruby methods to build hash
Mapping each value to an array of [value, value.class] then converting to hash withto_hachieves this.Final Answer:
Use values.map { |v| [v, v.class] }.to_h -> Option AQuick Check:
Map values to [value, class] pairs then to_h [OK]
Quick Trick: Use map with to_h to build hashes from arrays [OK]
Common Mistakes:
MISTAKES- Using non-existent methods like collect_class
- Trying to call class_map on arrays
- Confusing map with other methods
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