Ruby - File IO
Which of the following is the correct syntax to read all lines from a file named
data.txt into an array in Ruby?Which of the following is the correct syntax to read all lines from a file named data.txt into an array in Ruby?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall correct method name
The correct Ruby method to read lines isFile.readlines(no underscore or plural misspelling).Step 2: Check method call syntax
The method is called with parentheses and the filename as a string argument.Final Answer:
File.readlines('data.txt') -> Option DQuick Check:
Correct method name and syntax = File.readlines('data.txt') [OK]
Quick Trick: Use exact method name: File.readlines('filename') [OK]
Common Mistakes:
- Using underscores instead of camel case
- Misspelling the method name
- Omitting parentheses or using wrong brackets
Master "File IO" in Ruby
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