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viiftw/reflect_like_a_boss.go

Forked from olivere/example_test.go
Last active February 17, 2022 05:30
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Revisions

  1. viiftw renamed this gist Feb 17, 2022. 1 changed file with 0 additions and 0 deletions.
    0 example_test.go → reflect_like_a_boss.go
    View file
    File renamed without changes.
  2. viiftw revised this gist Feb 17, 2022. 1 changed file with 10 additions and 0 deletions.
    10 changes: 10 additions & 0 deletions example_test.go
    View file
    Original file line number Diff line number Diff line change
    @@ -6,6 +6,16 @@ import (
    "reflect"
    )

    // nicest way to walk through on an unknown type and put data into
    // the Result is an array of JSON content
    // The Each method gets a type what it can use to translate this JSONs and basically returns the slice of translated data

    // https://gist.github.com/olivere/a37f828d2018fb4a74cec400de4ba931#file-example_test-go

    func main() {
    Example()
    }

    type Article struct {
    Title string `json:"title"`
    Content string `json:"content"`
  3. viiftw revised this gist Feb 17, 2022. No changes.
  4. @olivere olivere revised this gist May 3, 2018. 1 changed file with 7 additions and 7 deletions.
    14 changes: 7 additions & 7 deletions example_test.go
    View file
    Original file line number Diff line number Diff line change
    @@ -12,7 +12,7 @@ type Article struct {
    }

    type Result struct {
    Hits [][]byte
    Hits []string
    }

    func Example() {
    @@ -21,10 +21,10 @@ func Example() {
    "content": "%s article's content"
    }`
    var result = Result{
    Hits: [][]byte{
    []byte(fmt.Sprintf(formatString, "First", "First")),
    []byte(fmt.Sprintf(formatString, "Second", "Second")),
    []byte(fmt.Sprintf(formatString, "Third", "Third")),
    Hits: []string{
    fmt.Sprintf(formatString, "First", "First"),
    fmt.Sprintf(formatString, "Second", "Second"),
    fmt.Sprintf(formatString, "Third", "Third"),
    },
    }

    @@ -39,11 +39,11 @@ func Example() {
    // Title: Third, Content: Third article's content
    }

    func (r *Result) Each(typ reflect.Type) []interface{} {
    func (r Result) Each(typ reflect.Type) []interface{} {
    var slice []interface{}
    for _, hit := range r.Hits {
    v := reflect.New(typ).Elem()
    if err := json.Unmarshal(hit, v.Addr().Interface()); err == nil {
    if err := json.Unmarshal([]byte(hit), v.Addr().Interface()); err == nil {
    slice = append(slice, v.Interface())
    }
    }
  5. @olivere olivere created this gist May 3, 2018.
    51 changes: 51 additions & 0 deletions example_test.go
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,51 @@
    package main

    import (
    "encoding/json"
    "fmt"
    "reflect"
    )

    type Article struct {
    Title string `json:"title"`
    Content string `json:"content"`
    }

    type Result struct {
    Hits [][]byte
    }

    func Example() {
    const formatString = `{
    "title": %q,
    "content": "%s article's content"
    }`
    var result = Result{
    Hits: [][]byte{
    []byte(fmt.Sprintf(formatString, "First", "First")),
    []byte(fmt.Sprintf(formatString, "Second", "Second")),
    []byte(fmt.Sprintf(formatString, "Third", "Third")),
    },
    }

    articlesContainer := result.Each(reflect.TypeOf(Article{}))
    for _, article := range articlesContainer {
    a := article.(Article)
    fmt.Printf("Title: %s, Content: %s\n", a.Title, a.Content)
    }
    // Output:
    // Title: First, Content: First article's content
    // Title: Second, Content: Second article's content
    // Title: Third, Content: Third article's content
    }

    func (r *Result) Each(typ reflect.Type) []interface{} {
    var slice []interface{}
    for _, hit := range r.Hits {
    v := reflect.New(typ).Elem()
    if err := json.Unmarshal(hit, v.Addr().Interface()); err == nil {
    slice = append(slice, v.Interface())
    }
    }
    return slice
    }