Generics code generation tool

How can we not write all that repetitive code and not take a performance hit, nor lose any type safety of our strongly-typed language?

Let's look at using Go tooling to generate the boilerplate code for us. We'll use it to replace interface{} in our code with <T>. Here, <T> represents any type that works in the context in which it is found. 

Since we'll be using real types, we'll get compile-time type safety.

The clipperhouse/gen tool

Though there are several generics code generation tools available, let's look at my personal favorite, clipperhouse/gen.

We get the following functions for free with the clipperhouse/gen tool:

Aggregation	Filter	Map	Misc
Aggregate[T]	All	Select[T]	List
Average	Any	Where	Ring
Average[T]	Distinct		Set
Count	DistinctBy		stringer
Max	First
Max[T]	GroupBy[T]
MaxBy	Shuffle
Min	Sort
Min[T]	SortBy
MinBy

Note

gen is a code-generation tool for Go. It's intended to offer generics-like functionality for your types. Out of the box, it offers LINQ/underscore-inspired...