graduating to go - a jumpstart into the go programming language

Graduating to GoThe Go Tour and Beyond in 2.5 Hours!

Kaylyn Gibilterra

Software Engineer, Capital One

Overly Enthusiastic About Go

@kgibilterra

Make a friend!

• Where are you from?

• What do you do?

• What technical experience do

you have (coding or not)

• Why are you interested in Go?

• Do you want to be Gopher

friends forever?

Why I love Go

You are already a Gopher

Outline1. Installation

2. Variables & Functions

3. Loops & Conditionals

4. Structs, Arrays, Slices, & Maps

5. Methods & Interfaces

6. Concurrency

7. APIs

Installation

https://golang.org/doc/install

https://play.golang.org/

brew install go

Workspace

Testing Your Installation

• Create $HOME/go/src/hello

• go build

• https://play.golang.org/

Go Syntaxhttps://tour.golang.org

Variables

Variables

Variables(Imports & Exports)

Functions

Functions

Functions

Exercise

• Declare 2 integers, 2 strings, and 2 booleans

• One should be set to it’s zero value and one

should be initialized to whatever you want

• Print out those variables

• Write a function that prints out all of these variables

https://play.golang.org/p/aRwLHoz0Nf

For Loop

For Loop

While Loop

Infinite Loop

If Statements

If Statements

Exercise• Write a function that imports the library “time” to check what time

it is now and print out if it falls inside the time of this conference,

the WIT Experience

• var day := time.Date(Year, Month, Day, Hour, Minute, Second,

Nanosecond, Timezone)

• var now := time.Now()

• in the Play environment, time is always set to:

2009-11-10 23:00:00 +0000 UTC m=+0.000000000

• Convert this into a while loop where the program continually

runs until it is WIT Experience time

https://play.golang.org/p/3BPc7f9ucZ

Exercise

Exercise

Additional Info

Structs, Arrays, Slices,

& Maps

Structs

Arrays

Slices

Arrays & Slices

Slice Range & Append

Maps

Exercise: Quicksort

1. Given an unsorted list:

2. Select a pivot number:

3. Put the pivot in the correct position for the sorted array

with all smaller elements before it, and all greater

elements after:

4. Recursively continue on the smaller and greater halves of

the list:

3 5 2 1 6 4

3 5 2 1 6 4

3 2 1 4 6 5

3 2 1 6 54

https://play.golang.org/p/tk4si__CyW

https://play.golang.org/p/w6QAle3Thq

Methods & Interfaces

Methods

Interfaces

Interfaces

Concurrency

Goroutines

Channels

Channels

Buffered Channel

Write an API

Java

•Jersey

•Spring

•Play Framework

•RestExpress

•Restlet

•Spark Framework

•Kotlin

C/C++

•libmicrohttpd

•jansson

•Kore

Python

•Django

•Tastypie

•Flask

•Falcon

•Bottle

•Eve

API Frameworks

Hello World API

https://play.golang.org/p/G08TUIjVMp

Go Tour - https://tour.golang.org

Books

• Go in Action

• The Go Programming Language

Online Resources

• Go By Example

• Effective Go

• The Go Language Spec

Code

• github.com/golang/go

• github.com/ardanlabs/gotraining

Blogs / Podcasts

• The Go Blog

• Gopher Academy

• Go Time

Gopher Slack - https://invite.slack.golangbridge.org/ #ghc2017

Gopher Resources

Thank you!Kaylyn Gibilterra

@kgibilterra

https://github.com/egonelbre/gophers

https://github.com/ashleymcnamara/gophers

https://github.com/tenntenn/gopher-stickers/tree/master/png

https://github.com/shalakhin/gophericons

Image Credits: