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Home Backend Development Golang How to start a go structure with a nested structure whose name has the package name

How to start a go structure with a nested structure whose name has the package name

Feb 06, 2024 am 09:45 AM

如何使用名称具有包名称的嵌套结构来启动 go 结构

Question content

I have a go structure defined as follows:

type record struct {
    events.apigatewayproxyrequest          `json:",omitempty"`
    events.apigatewaywebsocketproxyrequest `json:",omitempty"` //nolint:all
    events.sqsevent                        `json:",omitempty"`
}
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I want to know how to start this structure. I have tried before:

Record{events.APIGatewayProxyRequest: {}}
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But it gives me an error: invalid field name events.apigatewayproxyrequest in struct literal . It seems that names containing package names cannot be used as key names in structures. What's the correct way to start it?


Correct answer


When embedding a type into a structure, the field names of the enclosing structure are the same as the type names of the embedded type (without the package selector). so:

event:=Record{
  APIGatewayProxyRequest: events.APIGatewayProxyRequest{ ... },
}
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The right side of the initialization is the literal for the type, so you use the full type name (with the selector).

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