[Solved] Which Ruby code snippet correctly opens a file named 'data.txt' for reading? — Ans: File.open('data.txt', 'r') { |file| puts file.read } | Ruby

Ruby - File IO

Which Ruby code snippet correctly opens a file named 'data.txt' for reading?

AFile.open('data.txt', 'w') { |file| puts file.read }

BFile.open('data.txt', 'r') { |file| puts file.read }

CFile.open('data.txt', 'a') { |file| puts file.read }

DFile.open('data.txt', 'x') { |file| puts file.read }

Step-by-Step Solution

Solution:

Step 1: Identify the mode for reading
In Ruby, 'r' mode opens a file for reading.
Step 2: Check code correctness
File.open('data.txt', 'r') { |file| puts file.read } uses 'r' mode and reads the file content correctly.
Final Answer:
File.open('data.txt', 'r') { |file| puts file.read } -> Option B
Quick Check:
Read mode is 'r' in Ruby [OK]

Quick Trick: Use 'r' mode to open files for reading [OK]

Common Mistakes:

Master "File IO" in Ruby

9 interactive learning modes - each teaches the same concept differently

More Ruby Quizzes

Which Ruby code snippet correctly opens a file named 'data.txt' for reading?