ShareDAV/vendor/github.com/alecthomas/kong/defaults.go

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package kong
// ApplyDefaults if they are not already set.
func ApplyDefaults(target interface{}, options ...Option) error {
app, err := New(target, options...)
if err != nil {
return err
}
ctx, err := Trace(app, nil)
if err != nil {
return err
}
err = ctx.Resolve()
if err != nil {
return err
}
if err = ctx.ApplyDefaults(); err != nil {
return err
}
return ctx.Validate()
}