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doubles in ints. well, this is Macon the month, life's pretty good in

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his closet full of clothes but Macon's noticed lately that the owners of his [moth on sweater]

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closet don't really know how to keep things organized. it's hard to enjoy a

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dinner of pink wool cardigan on top of a shoe organizer. make it a sophisticated

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he likes his meals right off the rack. why is he such an organization nut? well

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because he's a computer scientist moth. and when you get right down to it a

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closet is a lot like a data structure in computer science, or a piece of memory

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set aside to hold some specific amount of data. just like the different spaces

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in the closet different types of data structures need different amounts of [closet organized into sections]

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space. you can't exactly stuff a ball gown into a shoebox after all ,and you

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definitely can't stuff an object into an in.t what in the world is an INT? well one

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of these guys- we'll get to it in a sec. all right now if we want to complete

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this metaphor Macon's code closet would look something like this. we aren't gonna

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focus on those sweater shoes and whatever random things fit into

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miscellaneous. well today's all about shirts and pants or ints and doubles.

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well ints and doubles are basic data structures in computer science and all

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they do is hold numbers. Computers love numbers way more than making love's [numbers crowded together]

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noshing on our mom's most expensive casual wool scarf. because they store

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numbers in memory computers can only set aside so much space for each number.

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which means that numbers can only be so big or so small which is part of the

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reason java has different memory types. numbers can also either have a decimal

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point or not and well first up integers. integers are usually considered the most [decimals pictured]

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important number type according to computers. these are the same as integers

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in math class. positive and negative numbers that don't have any decimals

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attached the integers usually take up either two

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or four bytes in computer memory which means that they can get up to either

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about thirty two thousand or two million. in Java we're working with four byte.

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versions well you can make an int by writing int variable name equals the

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number and Java is gonna take that number without the decimals into the [int variables listed]

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four bytes of memory it uses for any integer. well try to assign a number like

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four million to an int and you'll get nothing but errors. well if you need more

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space doubles are for both you and Macon. these number types like pants take up

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way more space than int -double the space by some counts

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well doubles need to be huge because they handle floating-point numbers, which

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means decimal numbers, in the math case. well doubles can be written in stored

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like this- another variable is set to the double value of six. well all that extra

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space makes those variables nice and wrinkle free which means better grub for [clothes in boxes]

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Macon. so if doubles can store so much more than ants why even bother with

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integers at all? when we've got two reasons .first only use what you need

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when making flies into a new closet and sees a giant buffet of t-shirts and

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jumpsuits, well he needs to be careful only to eat what he needs or the owners

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of the closet will get wise and decide to fumigate ,making wants to live and

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procreate you know giggity, so what well he needs to eat a normal amount .in the [ moth in a closet]

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same way you should only use the amount of space you need. if you're saving

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someone's age, well you probably only need intz unless that person is under

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ten and really wants you to remember that they're actually already halfway to

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their next birthday. all right well even if you do need

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numbers with decimals sometimes it's better to use integers anyway .if you

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remember from math class decimal point values are equal to fractions. computers

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don't use decimals which is base 10. they use binary .when converting between [equations]

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decimal and binary you can sometimes lose values so the result isn't exactly

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the same as what you've wanted it to be. take money for example

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well technically doubles make more sense because there's a decimal point but

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because we know that we can only break a dollar down into hundreds which are

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pennies by the way well we can just represent it in ints so that we don't end

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up losing any valuable Linkens. all right well a couple of pennies might not sound

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like much to you but to Macon in well that's a year supply of food. someone who [moth near coat]

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doesn't decide to go on a silk only diet.

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