Jetpack Compose: 'by viewModels()' vs 'viewModel<ViewModelName>()'

What's the difference here?

val myViewModel: MyViewModel by viewModels()

versus

val myViewModel = viewModel<MyViewModel>()

How does the first way work? How does it know which ViewModel to initialize? From the type-annotation after the variable-name?

In Android development using Kotlin, there are two common ways to initialize ViewModels in ViewModel-backed fragments or activities: by viewModels() and viewModel() functions provided by Android Jetpack libraries.

by viewModels()

• This approach is typically used with Kotlin property delegates.
• It automatically initializes the ViewModel associated with the given fragment or activity and retains it across configuration changes.
• The type of the ViewModel is inferred from the type of the property.
• This method is concise and generally preferred for simplicity and brevity.

viewModel()

• This approach is a function provided by the viewModel-ktx library in Android Jetpack.
• You explicitly specify the type of the ViewModel you want to retrieve.
• It allows for explicit specification of the ViewModel class.
• Useful when you need to retrieve a ViewModel of a different type than the property type.