英文:
Extract FIELD names of a struct and put them in a slice of strings
问题
我想要能够将结构体的字段名（而不是值）作为字符串提取出来，将它们放入一个字符串切片中，然后在程序的其他地方使用这些字段名来打印一个菜单在Raylib（一个用于Go的图形库）中。这样，如果我更改结构体中的字段，菜单将自动更新，而无需返回并手动编辑它。所以，如果你看一下下面的结构体，我想提取出MOVING、SOLID、OUTLINE等字段名，而不是布尔值。有没有办法做到这一点？
type genatt struct {
moving, solid, outline, gradient, rotating bool
}
英文:
I want to be able to extract the FIELD names (not the values) of a struct as strings, put them in a slice of strings and then use the names to print in a menu in Raylib (a graphics library for Go) elsewhere in a program. That way if I change the fields in the struct the menu will update automatically without having to go back and manually edit it. So, if you take a look at the struct below, I want to extract the names MOVING, SOLID, OUTLINE etc. not the boolean value. Is there a way to do this?
type genatt struc {
moving, solid, outline, gradient, rotating bool
}
答案1
得分: 3
你可以使用反射（reflect包）来实现这个。获取结构体值的reflect.Type描述符，并使用Type.Field()来访问字段。
例如：
t := reflect.TypeOf(genatt{})
names := make([]string, t.NumField())
for i := range names {
names[i] = t.Field(i).Name
}
fmt.Println(names)
这将输出（在Go Playground上尝试）：
[moving solid outline gradient rotating]
相关问题请参考：
https://stackoverflow.com/questions/10858787/what-are-the-uses-for-tags-in-go/30889373#30889373
英文:
You may use reflection (reflect package) to do this. Acquire the reflect.Type descriptor of the struct value, and use Type.Field() to access the fields.
For example:
t := reflect.TypeOf(genatt{})
names := make([]string, t.NumField())
for i := range names {
names[i] = t.Field(i).Name
}
fmt.Println(names)
This will output (try it on the Go Playground):
[moving solid outline gradient rotating]
See related questions:
https://stackoverflow.com/questions/10858787/what-are-the-uses-for-tags-in-go/30889373#30889373
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