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Alp Eren Can
25,230 PointsRuby For Loops - Variable Modification
In Ruby Foundations course and in the quiz following the Loops badge it asks: In a for loop, will modifications to variables (addition, substraction, etc) passed in to the body of the loop affect those variables in the original?
My answer was Yes but the correct answer appears to be No. If this is not by mistake can somebody explain why?
2 Answers
Maciej Czuchnowski
36,441 PointsI could be wrong but they could mean that, for example, the i variable in for i in 1...5 do is not influenced by modifications made inside the loop. So in the first run, i will be 1. Let's say that inside the loop you do i = i + 5. It will be 6 UNTIL the next run starts, then it will become 2, so it was not influenced by the addition inside the body. Something will be done to it again, but in the next run it becomes 3, it follows the order set in the first line. But they could have made the question clearer...
Alp Eren Can
25,230 PointsThat makes sense, thanks!
What I thought was declaring variable i before the loop and its value not changing when the loop is done with it.