33 lines
1.4 KiB
Markdown
33 lines
1.4 KiB
Markdown
# 2.8 Summary
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In this chapter, we mainly introduced the 25 Go keywords. Let's review what they are and what they do.
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break default func interface select
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case defer go map struct
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chan else goto package switch
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const fallthrough if range type
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continue for import return var
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- `var` and `const` are used to define variables and constants.
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- `package` and `import` are for package use.
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- `func` is used to define functions and methods.
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- `return` is used to return values in functions or methods.
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- `defer` is used to define defer functions.
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- `go` is used to start a new goroutine.
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- `select` is used to switch over multiple channels for communication.
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- `interface` is used to define interfaces.
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- `struct` is used to define special customized types.
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- `break`, `case`, `continue`, `for`, `fallthrough`, `else`, `if`, `switch`, `goto` and `default` were introduced in section 2.3.
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- `chan` is the type of channel for communication among goroutines.
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- `type` is used to define customized types.
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- `map` is used to define map which is similar to hash tables in other languages.
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- `range` is used for reading data from `slice`, `map` and `channel`.
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If you understand how to use these 25 keywords, you've learned a lot of Go already.
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## Links
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- [Directory](preface.md)
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- Previous section: [Concurrency](02.7.md)
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- Next chapter: [Web foundation](03.0.md)
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