Fix comment in errors2
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@ -9,9 +9,9 @@
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//
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// Right now, this function isn't handling the error case at all (and isn't
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// handling the success case properly either). What we want to do is: if we call
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// the `parse` function on a string that is not a number, that function will
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// return a `ParseIntError`, and in that case, we want to immediately return
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// that error from our function and not try to multiply and add.
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// the `total_cost` function on a string that is not a number, that function
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// will return a `ParseIntError`, and in that case, we want to immediately
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// return that error from our function and not try to multiply and add.
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//
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// There are at least two ways to implement this that are both correct-- but one
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// is a lot shorter!
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