Go

Variables

Variables are defined as:

var name type = value

For example:

var x string = "Hello"

The type can be inferred if an initial value is given, e.g.

var x = "Hello"

or by using the := operator:

x := "Hello"

Constants can be defined by using the const keyword instead of var.

Loops

Go only supports the for loop - unlike other languages it lacks while, do while etc. However, it is possible to emulate other loop constructs using for.

Imports

Standard import notation:

import "fmt"

Multiple imports can be done either one line at a time or as a group:

import (
  "fmt"
  "math"
)

The group format is preferred and used by gofmt.

Names in packages are exported if they begin with a capital letter.

Cross compiling

Cross compiling is easy with Go, using two environment variables:

GOOS: The operating system to target. Options are: windows (Microsoft Windows), darwin (macOS) and linux.

GOARCH: The architecture to target.

GUI programming

Walk

• Only works on Windows(?)

andlabs UI

• Cross-platform
• No commits since June 2020
• Lots of unresolved issues on GitHub

Qt

• therecipe/qt on GitHub
• No commits since September 2020
• Qt licensing unclear

Shiny

• Experimental
• Current state of development unclear

Nuklear

• No commits since March 2020

Fyne

Dependencies on Ubuntu:

• libgl1-mesa-dev
• xorg-dev

GTK

• Can't cross-compile(?)

Dependencies for GTK on Ubuntu:

• libglib2.0-dev
• libgdk-pixbuf-2.0-dev (or libgdk-pixbuf2.0-dev)
• libpango1.0-dev
• libgtk2.0-dev

Libraries

• systray - Place your Go application in the system tray. Cross-platform.

Articles

• A Gopher's Reading List
• Best practices for a new Go developer
• Packaging a Go application for macOS
• Shrink your Go binaries with this one weird trick
• Go arm64 Function Call Assembly
• How to Build Your First Web Application with Go
• Process huge log files
• Go: Using pointers to reduce copies is premature optimization
• Building a new router for GOV.UK
• Bit Hacking with Go code
• Gopher Wrangling. Effective error handling in Go

Talks

• Go at Google: Language Design in the Service of Software Engineering
• Go for Java Programmers

Tutorials

• Learn Go in Y minutes
• Go by example
• A tour of Go
• Effective Go
• High Performance Go Workshop

Books

• Learning Go