1.
Shintaro Ikeda
2018-07-26
Introduction of Go language
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2.
What is Go language?
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Go language (Golang) is a programming language developed
by Google

3.
Why Golang?
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Issues in existing programming languages (mainly C, C++)
Compiling is slow.
Garbage collection and parallel computation are not well
supported.
> We believe it's worth trying again with a new language, a
concurrent, garbage-collected language with fast compilation.
* https://golang.org/doc/faq

4.
Fields where Golang is used
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Container technologies
Docker
Kubernetes
Infrastructure platform
Terraform
Network
traefik
Monitoring
Grafana
Prometheus

5.
Feature of Golang
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Simple syntax
basically similar to C language
Sample code

6.
Feature of Golang
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You can write concurrency easily
Golang has green thread, “goroutine”
Communicate between goroutine by using
“channel”
Sample code

7.
Golang abandoned what has been cultivated
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Golang drops
Exception -> Golang's approach
> We believe that coupling exceptions to a control
structure, as in the try-catch-finally idiom, results in
convoluted code.
Inheritance -> Golang's approach
> Because there are no explicit relationships
between types and interfaces, there is no type
hierarchy to manage or discuss.

8.
Golang supports developers
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Cross compile
For Linux
For Windows
$ GOOS=linux GOARCH=amd64 go build
$ GOOS=windows GOARCH=amd64 go build

9.
Golang supports developers
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Format code
Create document
Do benchmark
$ go fmt hello.go
$ go doc yourPackage
$ go test -bench .

10.
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Thank you for your attention.