CODEWITHSUNDEEP
go
haroldT
haroldT

Reputation: 153

golang grammar questions about struct

here is some codes, but it is so long and unnecessary. Sometimes I need to write somethings to mysql, there is some kind of tables like that.

I have been try to use interface{}, but it is more complex.

Is there any way to make it shorter?

type One struct{
    Id int
    Name String
    Status bool
    Devtype string
    ...
    Created time.Time
}

type Two struct{
    Id int
    Name String
    Status bool
    Devtype string
    ...
    Created time.Time
}

type Three struct{
    Id int
    Name String
    Status bool
    Devtype string
    ...
    Created time.Time
}

func Insert(devtype string){
    if devtype == "one"{
        var value One
        value.Id = 1
        value.Name = "device"
        value.Status = false
        value.Devtype = devtype //only here is different
        value.Created = time.Now()
        fmt.Println(value)
    }else if devtype == "two"{
        var value Two
        value.Id = 1
        value.Name = "device"
        value.Status = false
        value.Devtype = devtype //only here is different
        value.Created = time.Now()
        fmt.Println(value)
    }else if devtype == "three"{
        var value Three
        value.Id = 1
        value.Name = "device"
        value.Status = false
        value.Devtype = devtype //only here is different
        value.Created = time.Now()
        fmt.Println(value)
    }
}

Upvotes: 0

Views: 95

Answers (1)

simon_xia
simon_xia

Reputation: 2544

golang's struct inherit will help this

type Base struct {
    Id int
    Name String
    Status bool
    ...
    Created time.Time
}

type One struct{
    Base
    Devtype string
}

type Two struct{
    Base
    Devtype string
}

type Three struct{
    Base
    Devtype string
}

func Insert(devtype string, base Base){
    switch devtype {
        case "one"
            var value One
            value.Base = base
            value.Devtype = devtype //only here is different
        case "two"
            var value Two
            value.Base = base
            value.Devtype = devtype //only here is different
        case "three"
            var value Three
            value.Base = base
            value.Devtype = devtype //only here is different
    }
}

PS: since there is noly one field different, it is not a good practice to create three type

Upvotes: 1

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