How to resolve error Cannot use 'struct{ width, height float64 }{2.0, 3.0}' (type struct {...}) as the type struct {...}

[Richard Whatever]

I'm developing a mvc Golang server.

The model file is as follows:

type Object struct { ... TargetSize struct{ width, height float64 } `json:"targetSize"` ... }

The controller file is as follows:

func (c *GetObject) Get() []models.Object { return []models.Object{ {... struct{ width, height float64 }{2.0, 3.0}, ... },

I keep on getting the error of "Cannot use 'struct{ width, height float64 }{2.0, 3.0}' (type struct {...}) as the type struct {...}" and I don't know how to resolve this.

[Dan Kortschak]

You'll benefit from defining the type struct{ width, height float64 }
if you need to use it elsewhere. Also, for JSON de/serialisation, the
fields will need to be exported. This will also fix you compile.

[Harris, Andrew]

I believe anonymous definitions of structs here is the cause. While equivalent, each anonymous definition is a distinct type.

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From: golan...@googlegroups.com <golan...@googlegroups.com> on behalf of Richard Whatever <c.richa...@gmail.com>
Sent: Tuesday, August 30, 2022 7:46:47 AM
To: golang-nuts <golan...@googlegroups.com>
Subject: [go-nuts] How to resolve error Cannot use 'struct{ width, height float64 }{2.0, 3.0}' (type struct {...}) as the type struct {...}

 

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[Richard Whatever]

Thanks for the assistance. Issue resolved by naming "width" and "height" with the capital starting letter, "Width" and "Height". Looks like I'm still not familiar with the Go export syntax yet. 

Harris, Andrew <harr...@spu.edu> 于2022年8月31日周三 06:07写道：