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edited Jul 2, 2014 at 17:58

I'm getting the following error when calling the .FieldByName method of a reflected value, the exact error is :-

panic: reflect: call of reflect.Value.FieldByName on ptr Value

and the code is :-

s := reflect.ValueOf(&value).Elem() (value is a struct)
metric := s.FieldByName(subval.Metric).Interface() (subval.Metric is a string)

I understand this isn't much, but this is all the information I can get.

Here's a link to the code on Go Playground: http://play.golang.org/p/E038cPOoGp

I'm getting the following error when calling the .FieldByName method of a reflected value, the exact error is :-

panic: reflect: call of reflect.Value.FieldByName on ptr Value

and the code is :-

s := reflect.ValueOf(&value).Elem() (value is a struct)
metric := s.FieldByName(subval.Metric).Interface() (subval.Metric is a string)

I understand this isn't much, but this is all the information I can get.

I'm getting the following error when calling the .FieldByName method of a reflected value, the exact error is :-

panic: reflect: call of reflect.Value.FieldByName on ptr Value

and the code is :-

s := reflect.ValueOf(&value).Elem() (value is a struct)
metric := s.FieldByName(subval.Metric).Interface() (subval.Metric is a string)

I understand this isn't much, but this is all the information I can get.

Here's a link to the code on Go Playground: http://play.golang.org/p/E038cPOoGp

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asked Jul 2, 2014 at 17:34

Reflect.Value.FieldByName causing Panic

I'm getting the following error when calling the .FieldByName method of a reflected value, the exact error is :-

panic: reflect: call of reflect.Value.FieldByName on ptr Value

and the code is :-

s := reflect.ValueOf(&value).Elem() (value is a struct)
metric := s.FieldByName(subval.Metric).Interface() (subval.Metric is a string)

I understand this isn't much, but this is all the information I can get.

reflection go