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So did you think long and hard about that?



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Well.



3

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You probably came up with something like this, you had three integers, whatever they are, seven,



4

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four, three in my case, you said if I want to multiply them together, I'm just going to go to my



5

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new array and I'm going to get Elements zero way to multiply it by my new array.



6

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Element one.



7

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And multiply it by my new array.



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Element to now, I'm sorry if I forgot to mention that the index is of a actually increment upwards



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012.



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I don't think actually you said that, but I would guess that maybe that was implied.



11

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I don't know.



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And of course, if we run that we get seven times four times three, which is apparently 80 for.



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Now, before the break, I told you that I want you to think logically about these things, this is



14

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bad code.



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Can you guess why it's bad code?



16

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Because an array could be any size.



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Usually you'll get something like an array from your database, from your server, and you don't actually



18

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know how big it is.



19

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Or maybe you do.



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You know, the 50 items are coming from your server to play music to the end user.



21

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But what if someone changes that to 40 items to reduce load on the server?



22

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What do you do then?



23

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Well, your code is wrong if you have 50 items that you multiply.



24

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And besides that, imagine repeating that, what, 15, 16 times?



25

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You don't want to do that.



26

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Do you say what I was trying to get across to you and I'm not going to give you the solution here?



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It'll become it'll become pretty obvious what the solution is as you proceed through this course.



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But what I want you to think about is, is this unsustainable?



29

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And if it is, how would I go about fixing this?



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I'm going to give you the tools to fix it in a couple of lectures time when we talk about control,



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flow effects and statements like that, that will solve these problems for us.



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But I just wanted you to think about the dangers that lurk when you just have a throwaway piece of code



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moment and say, I'll just do it like this.



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And you don't realize that in the future that's going to cause you a world of pain anyway.



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That's enough of me bleating on about this onto the next one.