github.com/traefik/yaegi@v0.15.1/_test/gen11.go (about)

     1  package main
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"net/netip"
     7  )
     8  
     9  type Slice[T any] struct {
    10  	x []T
    11  }
    12  
    13  type IPPrefixSlice struct {
    14  	x Slice[netip.Prefix]
    15  }
    16  
    17  func (v Slice[T]) MarshalJSON() ([]byte, error) { return json.Marshal(v.x) }
    18  
    19  // MarshalJSON implements json.Marshaler.
    20  func (v IPPrefixSlice) MarshalJSON() ([]byte, error) {
    21  	return v.x.MarshalJSON()
    22  }
    23  
    24  func main() {
    25  	t := IPPrefixSlice{}
    26  	fmt.Println(t)
    27  	b, e := t.MarshalJSON()
    28  	fmt.Println(string(b), e)
    29  }
    30  
    31  // Output:
    32  // {{[]}}
    33  // null <nil>