golang: declaring a camelcase in a struct declaration

I'm trying to read a yaml file via golang.

But the "matchLabels" sub-struct is not being recognized

yaml

apiVersion: apps/v1
kind: Deployment
metadata:
    name: nginx-deploy
    labels:
      app: test
spec:
    replicas: 3
    selector:
        matchLabels:
            app: web

struct

type myData struct {
	Apivesion string `yaml:"apiVersion"`
	Kind      string
	Metadata  struct {
		Name   string
		Labels struct {
			App string
		}
	}
	Spec struct {
		Replicas int64
		Selector struct {
			Matchlabels struct {
				App string
			}
		}
	}
}

Expectation

&{apps/v1 Deployment {nginx-deploy {test}} {3 {{web}}}}

Result

&{apps/v1 Deployment {nginx-deploy {test}} {3 {{}}}}

Fix didn't work:

Matchlabels struct `yaml:"matchLabels"` {

Cerise Limón gave the answer in a comment:

> Field tags follow the type:
> ~~~
> Matchlabels struct { App string }
> yaml:"matchLabels"
> ~~~

I don't think you implemented the suggested answer correctly, see where the tag is:

type myData struct {
	Apivesion string `yaml:"apiVersion"`
	Kind      string
	Metadata  struct {
		Name   string
		Labels struct {
			App string
		}
	}
	Spec struct {
		Replicas int64
		Selector struct {
			Matchlabels struct {
				App string
			} `yaml:"matchLabels"`
		}
	}
}

See also: https://go.dev/play/p/yd9c-iBz2yL

type AutoGenerated struct {
	APIVersion string `yaml:"apiVersion"`
	Kind       string `yaml:"kind"`
	Metadata   struct {
		Name   string `yaml:"name"`
		Labels struct {
			App string `yaml:"app"`
		} `yaml:"labels"`
	} `yaml:"metadata"`
	Spec struct {
		Replicas int `yaml:"replicas"`
		Selector struct {
			MatchLabels struct {
				App string `yaml:"app"`
			} `yaml:"matchLabels"`
		} `yaml:"selector"`
	} `yaml:"spec"`
}

You can use this tool, it is really helpful:

> https://zhwt.github.io/yaml-to-go/