是否可以在Golang中腌制结构实例 [英] Is it possible to pickle instances of structs in Golang

问题描述

我正在用Golang做一些机器学习.我现在碰壁了，我训练有素的分类器需要将近半分钟的时间来训练，并且想要保存该分类器的实例，这样我就不必每次都从头开始进行训练. Golang应该是一个怎样去做的人? 仅供参考，我的分类器是结构

I am doing some machine learning in Golang. I am now hitting a wall, my trained classifier takes almost half a minute to train and want to save that instance of the classifier so that I do not have to train in from scratch every time. How should someone go about doing this is Golang? FYI my classifier is a struct

当我使用python进行此类处理时，使用pickle非常简单.有等同的东西吗?

When I do this type of stuff with python, it's very easy with pickle. Is there an equivalent?

推荐答案

尝试 gob 或 encoding/json 来编组对象.之后，您可以将字符串存储到文件中.

Try gob or encoding/json to marshal your objects. After that, you can store the string to a file.

此处是使用json的示例:

Here is an example to use json:

package main

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

type Book struct {
    Title string
    Pages []*Page
}

type Page struct {
    pageNumber int // remember to Capitalize the fields you want to marshal
    Content    string
}

func main() {
    // First make a book with nested array of struct pointers
    myBook := &Book{Title: "this is a title", Pages: make([]*Page, 0)}
    for i := 0; i < 3; i++ {
        myBook.Pages = append(myBook.Pages, &Page{i + 1, "words"})
    }

    // Open a file and dump JSON to it!
    f1, err := os.Create("/tmp/file1")
    enc := json.NewEncoder(f1)
    err = enc.Encode(myBook)
    if err != nil {
        panic(err)
    }
    f1.Close()

    // Open the file and load the object back!
    f2, err := os.Open("/tmp/file1")
    dec := json.NewDecoder(f2)
    var v Book
    err = dec.Decode(&v)
    if err != nil {
        panic(err)
    }
    f2.Close()

    // Check
    fmt.Println(v.Title)            // Output: <this is a title>
    fmt.Println(v.Pages[1].Content) // Output: <words>

    // pageNumber is not capitalized so it was not marshaled
    fmt.Println(v.Pages[1].pageNumber) // Output: <0>

}

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