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Add prerequisite for difference-of-squares exercise #1159

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TomPradat
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@tejasbubane
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@TomPradat Can you clarify this a little bit? Because the exercise can be solved without arrays so I would not consider array-transformations as a "prerequisite".

@TomPradat
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That's true @tejasbubane , I chose a set of concepts that can be used to solve the exercise.

According to #960 if alternative concepts also allow the student to solve the exercise, we can specify the concepts of either approaches.

That said It seems that currently more exercises teach array-transformations than for-loops. So I don't mind changing for for-loops. What do you think ?

@SleeplessByte
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Loops sounds good. Even when we use transformations, we're using loops, but not the other way around, I guess.

@SleeplessByte SleeplessByte merged commit 4089879 into exercism:main Jun 18, 2021
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3 participants