[FEATURE] it's option to set case sensitive

[Nothing-no]

anyway, I think it's better to offer user an option to choose case sensitive or not.

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✅ Nothing-no
❌ zhijian.chen

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[Nothing-no]

anyway, I think it's better to offer user an option to choose case sensitive or not.

add MapTo

• source file

service:
    ip: 127.0.0.1
    port: 1234
version: 1.0.01

• code

type Service struct {
	Port int `viper:"port"`
	IP string `viper:"ip"`
}
//your prepare code ...

var service Service
var version string

if err := viper.MapTo("service",&service); err != nil {
	//error handler...
}
if err := viper.MapTo("version",&version); err != nil {
	//error handler...
}



log.Println(service,version)

//....