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Hi, welcome back to a new section. You'll learn

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more about functions throughout these videos. You

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did learn how to define a function and how to call

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it previously in the course, but here you'll learn some

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more advanced concepts about functions. And you

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really, really need to learn about functions

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because they are some very fundamental blocks of

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code. So you you write your programs by using

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functions which do certain things. So let's learn

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more about functions. See you in the next video.