Add .defaultValue and .isDefaultValue to @Default

[sindresorhus]

I need it to disable an input the value matches the default value. This is what I'm currently using:

.disabled(textSize == Defaults.Keys.textSize.defaultValue)

[sindresorhus]

I wonder if it also makes sense to add .isDefaultValue for convenience.

[hank121314]

I wonder if it also makes sense to add .isDefaultValue for convenience.

Yeah! It will be great if we have .isDefaultValue 😄.
But Defaults.Serializable is not Equatable, we should document that only Value conforms to Defaults.Serializable & Equatable can use .isDefaultValue.

[sindresorhus]

we should document that only Value conforms to Defaults.Serializable & Equatable can use .isDefaultValue.

I think that's made clear through the type signature.