Ruby - File IOWhich of these is a reason to use file handling in Ruby?ATo change Ruby syntax rulesBTo speed up program executionCTo store user data permanentlyDTo automatically debug codeCheck Answer
Step-by-Step SolutionSolution:Step 1: Identify file handling use casesFile handling is used to save data permanently outside the program.Step 2: Match reason with optionsOnly To store user data permanently matches this use case correctly.Final Answer:To store user data permanently -> Option CQuick Check:File handling use = Permanent data storage [OK]Quick Trick: File handling stores data beyond program runtime [OK]Common Mistakes:Confusing file handling with performance improvementThinking it changes language syntax
Master "File IO" in Ruby9 interactive learning modes - each teaches the same concept differentlyLearnWhyDeepVisualTryChallengeProjectRecallTime
More Ruby Quizzes Blocks, Procs, and Lambdas - Proc vs lambda differences (arity, return) - Quiz 6medium Class Methods and Variables - Constants in classes - Quiz 15hard Classes and Objects - Why everything is an object in Ruby - Quiz 7medium Enumerable and Collection Processing - Find/detect for first match - Quiz 13medium Enumerable and Collection Processing - Any?, all?, none? predicates - Quiz 12easy File IO - File.open with block (auto-close) - Quiz 4medium Inheritance - Why single inheritance in Ruby - Quiz 5medium Inheritance - Subclass with < operator - Quiz 15hard Modules and Mixins - Namespacing with modules - Quiz 8hard Modules and Mixins - Prepend for method chain insertion - Quiz 3easy