Ruby - Operators and Expressions
Why does the Ruby range
(1...1) produce an empty array when converted with to_a?Why does the Ruby range (1...1) produce an empty array when converted with to_a?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the triple dot range
The triple dot excludes the end value, so it includes numbers from 1 up to but not including 1.(1...1)Step 2: Result of such a range
Since start and end are the same and end is excluded, no numbers are included, resulting in an empty array.Final Answer:
Because the start and end are the same and triple dot excludes the end -> Option BQuick Check:
Triple dot excludes end, empty if start=end [OK]
Quick Trick: Triple dot excludes end, empty if start equals end [OK]
Common Mistakes:
- Thinking ranges cannot have equal start and end
- Assuming triple dot includes the end
- Believing
to_afails on such ranges
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