Ruby - File IO
Which Ruby method from the CSV library is used to read all rows from a CSV file into an array?
Which Ruby method from the CSV library is used to read all rows from a CSV file into an array?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Recall CSV methods for reading
CSV.read reads the entire CSV file and returns an array of rows.Step 2: Compare other methods
CSV.open is for opening files with a block, CSV.generate creates CSV data as a string, CSV.write writes data to a file.Final Answer:
CSV.read -> Option BQuick Check:
Method to read all rows = CSV.read [OK]
Quick Trick: Use CSV.read to get all rows as an array [OK]
Common Mistakes:
- Using CSV.open to read all rows
- Confusing CSV.generate with reading
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