Learning Functional Programming in Go

Aggregate[T]

AggregateT iterates over a slice, aggregating each element into a single result. AggregateT is comparable to LINQ's Aggregate and underscores reduce function.

Here is the signature:

func (ExampleSlice) AggregateT(func(T, Example) T) T

In the following example, we specify in our comment annotation that we want gen to create an Aggregate function that operates over a slice of strings. We define a join function that we pass to AggregateString, which performs the join operation:

// +gen slice:"Aggregate[string]" type Employee struct{ Name   string Department string }  employees := EmployeeSlice { {"Alice", "Accounting"}, {"Bob", "Back Office"}, {"Carly", "Containers"}, }  join := func(state string, e Employee) string { if state != ...