initialValue method
Returns a cell that evaluates to the value of value
when the value of this is uninitialized.
The returned cell evaluates to the value of the cell value
if this cell
throws an UninitializedCellError or PendingAsyncValueError exception.
A keyed cell is returned, which is unique for a given this
and value
.
Implementation
ValueCell<T> initialValue(ValueCell<T> value) =>
onError<UninitializedCellError>(value)
.loadingValue(value);