Convert slice of struct to slice of interface

Question

How do I convert the following slice of struct to slice of interface?

type BatchImportData struct {
    Name string
    SetHash []string
    SetMembers []string
}

var b []BatchImportData

This is so I can batch import data into Neo4j, as the Neo4j driver requires a slice of interface when the slice of struct is passed as a parameter.

Cypher Type Driver Type

List []interface{}

You need to loop over the slice and convert each and append it to a `[]interface` — super, Sep 20 '20 at 09:21

score 2 · Accepted Answer · answered Sep 20 '20 at 09:28

2

You can loop over the struct slice and append it to the interface slice.

    var b []BatchImportData = []BatchImportData{}

    var c []interface{}

    for _, b := range b {
        c = append(c, b)
    }

answered Sep 20 '20 at 09:28

edkeveked

score 1 · Answer 2 · answered Sep 20 '20 at 10:48

I think your doubt may be something along the lines of this, in which case you may find this answer quite helpful.

So you will need to loop over the slice and copy each element. Something like:

var b []BatchImportData
interfaceSlice := make([]interface{}, len(b))
for i, v := range b {
  interfaceSlice[i] = v
}

2 Answers2