How to use interfaces in Go (2012)
jordanorelli.com
How to use interfaces in Go (2012)
1–10 of 30 posts
Re: How to use interfaces in Go (2012)
#2> func main() {
> animals := []Animal{Dog{}, Cat{}, Llama{}, JavaProgrammer{}}
> for _, animal := range animals {
> fmt.Println(animal.Speak())
> }
> }
This makes my eyes hurt. In this modern age we still haven't learned to create easy to read languages?
Re: How to use interfaces in Go (2012)
#3> func main() { > animals := []Animal{Dog{}, Cat{}, Llama{}, JavaProgrammer{}} > for _, animal := range animals { > fmt.Println(animal.Speak()) > } > } This makes my eyes hurt. In this modern age we still haven't learned to create easy to read languages?
I think the syntax is terse mostly for the sake of example.
There's a lot going on in about 3 lines.
Re: How to use interfaces in Go (2012)
#4Previously on HN:
https://news.ycombinator.com/item?id=9320235
The blog post is from 2012.
Re: How to use interfaces in Go (2012)
#5I don't understand why you would share a three year old post explaining the basics of interfaces in Go.
Re: How to use interfaces in Go (2012)
#6Read this when I was first getting into Go; super helpful and a fun(ish) read for people curious about the language
Re: How to use interfaces in Go (2012)
#7The article is a pretty good intro to how to use interfaces. I think some people, especially those not familiar with the language would benefit from reading such articles and learning how to write idiomatic Go code, rather than ask for features that would allow them to write idiomatic $LANGUAGE_THEY_LIKE code.
Re: How to use interfaces in Go (2012)
#8> func main() { > animals := []Animal{Dog{}, Cat{}, Llama{}, JavaProgrammer{}} > for _, animal := range animals { > fmt.Println(animal.Speak()) > } > } This makes my eyes hurt. In this modern age we still haven't learned to create easy to read languages?
This is a very contrived example to illustrate what an interface is in Go. You will almost likely never see code written like that in a good project.
Re: How to use interfaces in Go (2012)
#9> func main() { > animals := []Animal{Dog{}, Cat{}, Llama{}, JavaProgrammer{}} > for _, animal := range animals { > fmt.Println(animal.Speak()) > } > } This makes my eyes hurt. In this modern age we still haven't learned to create easy to read languages?
I think the syntax is terse mostly for the sake of example. There's a lot going on in about 3 lines.
I don't think "terse" quite describes it. Python can be terse, as you can say:
n = sum(x for x in my_sequence if x % 2 == 0)
Re: How to use interfaces in Go (2012)
#10> type JavaProgrammer struct {
> }
> func (j JavaProgrammer) Speak() string { > return "Design patterns!" > }
shrug At least our language designers trusted our intelligence enough to implement generics.