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json-iterator/example_test.go

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package jsoniter_test
import (
"fmt"
"os"
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"github.com/json-iterator/go"
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)
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func ExampleMarshal() {
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type ColorGroup struct {
ID int
Name string
Colors []string
}
group := ColorGroup{
ID: 1,
Name: "Reds",
Colors: []string{"Crimson", "Red", "Ruby", "Maroon"},
}
b, err := jsoniter.Marshal(group)
if err != nil {
fmt.Println("error:", err)
}
os.Stdout.Write(b)
// Output:
// {"ID":1,"Name":"Reds","Colors":["Crimson","Red","Ruby","Maroon"]}
}
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func ExampleUnmarshal() {
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var jsonBlob = []byte(`[
{"Name": "Platypus", "Order": "Monotremata"},
{"Name": "Quoll", "Order": "Dasyuromorphia"}
]`)
type Animal struct {
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Name string
Order string
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}
var animals []Animal
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err := jsoniter.Unmarshal(jsonBlob, &animals)
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if err != nil {
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fmt.Println("error:", err)
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}
fmt.Printf("%+v", animals)
// Output:
// [{Name:Platypus Order:Monotremata} {Name:Quoll Order:Dasyuromorphia}]
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}
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func ExampleMarshalWithBestPerformance() {
type ColorGroup struct {
ID int
Name string
Colors []string
}
group := ColorGroup{
ID: 1,
Name: "Reds",
Colors: []string{"Crimson", "Red", "Ruby", "Maroon"},
}
stream := jsoniter.ConfigFastest.BorrowStream(nil)
defer jsoniter.ConfigFastest.ReturnStream(stream)
stream.WriteVal(group)
if stream.Error != nil {
fmt.Println("error:", stream.Error)
}
os.Stdout.Write(stream.Buffer())
// Output:
// {"ID":1,"Name":"Reds","Colors":["Crimson","Red","Ruby","Maroon"]}
}
func ExampleUnmarshalWithBestPerformance() {
var jsonBlob = []byte(`[
{"Name": "Platypus", "Order": "Monotremata"},
{"Name": "Quoll", "Order": "Dasyuromorphia"}
]`)
type Animal struct {
Name string
Order string
}
var animals []Animal
iter := jsoniter.ConfigFastest.BorrowIterator(jsonBlob)
defer jsoniter.ConfigFastest.ReturnIterator(iter)
iter.ReadVal(&animals)
if iter.Error != nil {
fmt.Println("error:", iter.Error)
}
fmt.Printf("%+v", animals)
// Output:
// [{Name:Platypus Order:Monotremata} {Name:Quoll Order:Dasyuromorphia}]
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}
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func ExampleOneLine() {
val := []byte(`{"ID":1,"Name":"Reds","Colors":["Crimson","Red","Ruby","Maroon"]}`)
fmt.Printf(jsoniter.Get(val, "Colors", 0).ToString())
// Output:
// Crimson
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}