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<v ->So you already know that functions</v>

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are one of the most fundamental building blocks

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of any JavaScript program.

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And so let's now turn our attention back to functions

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because there is actually a lot

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that we don't know yet about functions.

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So in this section, we're gonna study

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some quite advanced topics, such as higher order functions

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to bind method and also closures.

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And once again, it's crucial that you understand

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these topics before moving on to future sections.

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So make sure to follow this one all the way to the end.

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(upbeat music)