Markdium-

Markdium-Go.go

package main

import (
    "encoding/json"
    "fmt"
)

type A struct {
    ValA int `json:"valA"`
    ValB int`json:"valB"`
}

var input = A{}

func main() {
    dataSequence := [][]byte{
        []byte(`{"valA": 1, "valB": 1}`),
        []byte(`{"valA": "invalid", "valB": 3}`), // valA fails to parse
        []byte(`{}`), // everything omitted
    }
    var As = make([]A, len(dataSequence))
    for i, data := range dataSequence {
        if err := json.Unmarshal(data, &input); err == nil {
            As[i] = input
        } else {
            // skips second element with invalid `valA`
        }
    }
    output, _ := json.Marshal(As[len(As)-2:]) // last two elements
    fmt.Println(string(output))
}