What’s the preferred style to fallback to a defaul...

# announcements

[Joffrey]

What’s the preferred style to fallback to a default value when accessing a map?
map[key] ?: defaultValue or map.getOrDefault(key, defaultValue)?

[Dominaezzz]

Depends on whether you values can be null I guess. (As suppose to not existing)

[Mike]

I'd always go with getOrDefault

It will always do what you want, and is easy to read.

[Joffrey]

I see. Thanks for your input. When using a map with a non-nullable value type, I find using the elvis much shorter, so I tend to favor it unless I need to call a method on the result. But maybe it’d be wiser to stick with getOrDefault() for general consistency.

[tseisel]

Note: getOrDefault may be defined only when running Java 8 or more. Not a good fit for Android.