Suggestion to add a method to return default value provided by user if Val is not Valid

[apatniv]

Thanks for providing a useful library.

Currently, I need to do the following to determine the default value

const defaultPath = "magic.dat" // somewhere in the package

optPath := gonull.NewNullable("hello.dat")
path := ""
if optPath.Valid {
    path = optPath.Val
} else {
    path = defaultPath
}

Suggestion is to add a new receiver method OrElse so that this can be done in one line

path := optPath.OrElse(defaultPath)

Signature:

func (n *Nullable[T]) OrElse(value T) T

[apatniv]

I can make the PR if you are ok. Thanks

[LukaGiorgadze]

Hey @apatniv, this is really nice feature and I would love to see it in the next release. using OrElse we can reduce the amount of if else conditions.

Feel free to rise a PR, I'll be more than happy to approve it.

Thank you for your feedback and open-source contribution.

[LukaGiorgadze]

PR #17