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- Welcome to lesson
three, data structures,

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maybe one of the more important lessons

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that we're gonna learn here early on.

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They're all important,

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but this one's early on.

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Because this is gonna teach
us mechanical sympathy

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and data-oriented design.

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We're gonna learn why Go only
has arrays, slices, and maps.

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That's one of those
things that confused me

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early on in the language.

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Where are my lists?

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Where are stacks?

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Where are my queues?

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No, no, no, no, no.

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Go's got arrays, slices, and maps,

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and in this lesson,

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we're not just gonna learn the mechanics

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and the semantics.

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We're also gonna learn the history

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of why Go has made those choices.