validation

var IsBase64 = validation.NewStringRuleWithError(base64.IsEncoded, is.ErrBase64)

IsBase64 validates whether a value is a base64 encoded string. It is similar to is.Base64 but more generic and robust although less performant.

var IsPort = validation.By(isPort)

IsPort validates whether a value is a port using is.Port from github.com/go-ozzo/ozzo-validation/v4. However, it supports all base go integer types not just strings.