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Let's talk about our next developer fundamentals and this one is understanding data structures a really

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good programmer is a programmer that is able to decide what data structure to use when up until now

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we've learned about dictionaries and lists and we'll learn about a couple more throughout the course

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but a really good programmer a programmer who's experienced is able to understand what the tradeoffs

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are when to use what.

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And although I can give you a list of this is when you should do this and this is when you should use

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maybe dictionaries.

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The thing is this takes practice and experience.

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So throughout our course and then the exercises that we're going to do the projects we're going to build

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at the end.

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I hope that this idea of understanding when to use what data structure makes sense to you.

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But let's go back to our example.

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When should you use a list and when should you use a dictionary Well the first thing we have to realize

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that a dictionary is not sorted right.

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A list has order it has zero one indexes.

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So on and so forth.

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A dictionary has no order.

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So maybe if you want to have a list of people and line your shop well you should probably use a list.

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But maybe you have a user that is playing a game and that user has first name maybe weapons maybe an

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H that doesn't have to be ordered.

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So you might use a dictionary.

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Also you'll notice that dictionaries hold more information than lists right.

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Because lists only have that single value.

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That is a list.

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Has the index and then whatever the value is in here we have a dictionary inside of a list which is

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holding a lot of information.

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Deep down a list is simply an index in some sort of a value here.

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Right.

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Versus a dictionary that holds a lot more information.

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It holds a key.

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So this could be the weapons of that user.

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Hello can be the greeting of that user maybe is Magic is another information about that user.

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So we're able to have both keys and values in a dictionary.

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So it holds a lot more information.

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And as we learn different data structures you'll have these different pros and cons.

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You'll start to understand as to when to use what.

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All right.

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There's another developer fundamentals.

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I'll see in the next one by.