go [Doku Wiki]

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===== Overview =====

Stuff regarding Go programming language.

===== Figure out/Stuff =====

  * proper brace placement to avoid semicolon insertion
  * "import path" versus "package name" (factored import statement)
  * fmt.Printf() format specifiers
  * named return values (explicit or allow to default)
  * type "zero values"
  * "var p = &Vertex{1,2}", what is the scope/lifetime?
  * how to list all package methods from the command line?
  * how multi-platform things like Sqrt() work?
  * possible formats of for loop
  * neat uses of "defer" statements (stacked)
    * deferred call args are evaluated immediately
    * modifying named return values
  * package "init" functions
  * closures
  * methods

===== Course outline =====

  * installation
  * /usr/lib/golang package structure (Go 1.13), personal src structure

===== External links =====

==== Official Go home page ====

  * [[https://golang.org/|https://golang.org/]]
    * [[https://golang.org/doc/|Documentation]]
    * [[https://tour.golang.org/welcome/1|The tour]]
    * [[https://blog.golang.org/|Blog]]
    * [[https://github.com/golang/go/wiki|Wiki]]

==== Articles on Go ====

  * [[https://medium.com/@kevalpatel2106/why-should-you-learn-go-f607681fad65|Why should you learn Go?]] (Jan, 2017)
  * [[https://hackernoon.com/the-beauty-of-go-98057e3f0a7d|The beauty of Go]] (Oct, 2017)
  * [[https://www.infoworld.com/article/3198928/development-tools/whats-the-go-language-really-good-for.html|What's the Go language really good for?]] (Jun, 2017)
  * [[https://blog.learngoprogramming.com/about-go-language-an-overview-f0bee143597c|About Go Language -- An Overview]] (Sep, 2017)
  * [[https://medium.com/golangspec/import-declarations-in-go-8de0fd3ae8ff|Import declarations in Go]]
  * [[https://www.alexedwards.net/blog/an-overview-of-go-tooling|An overview of Go's tooling]]

==== Technical papers on Go ====

  * [[https://docs.google.com/document/d/1e8kOo3r51b2BWtTs_1uADIA5djfXhPT36s6eHVRIvaU/edit| Go 1.4 internal packages]]
  * [[https://docs.google.com/document/d/1Bz5-UB7g2uPBdOx-rw5t9MxJwkfpx90cqG9AFL0JAYo/|Go 1.5 Vendor Experiment]]
  * [[https://medium.com/golangspec/import-declarations-in-go-8de0fd3ae8ff|Import declarations in Go]]

===== Internal wiki links =====

  * [[Go Fedora packages]]
  * [[Go env]]
  * [[Go tour notes]]
  * [[Golangbot tutorial]]

===== Language features =====

==== Methods ====

  * Go does not have classes; a method is a function with a special receiver argument (such as "Vertex").
  * Value receiver versus pointer receiver (one or the other, not both)
  * Functions with a pointer argument must take a pointer, while methods with pointer receivers take either a value or a pointer as the receiver when they are called.
  * Methods with value receivers take either a value or a pointer as the receiver when they are called.