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"encoding/gob" gob: type gocv.Mat has no exported fields #38218

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tangtang666 opened this issue Apr 2, 2020 · 1 comment
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"encoding/gob" gob: type gocv.Mat has no exported fields #38218

tangtang666 opened this issue Apr 2, 2020 · 1 comment
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@tangtang666
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What version of Go are you using (go version)?

$ go version
1.14

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

go env Output
$ go env

What did you do?

I want to use a socket to send a pic Gocv.Mat

conn, _ := net.Dial("tcp", "localhost:8090")
encoder := gob.NewEncoder(conn)
//var chip gocv.Mat
fmt.Println("start read pic")
gocv.IMRead("test2/1.png", 0)
img := gocv.NewMat()
fmt.Println("start send pic")
err := encoder.Encode(img)
fmt.Println(err)

What did you expect to see?

What did you see instead?
@mdlayher
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mdlayher commented Apr 2, 2020

The error is correct. You cannot gob encode a type with no exported fields.

This is not an issue with Go, please see https://github.com/golang/go/wiki/Questions.

@mdlayher mdlayher closed this as completed Apr 2, 2020
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@mdlayher @gopherbot @tangtang666