Re: Create variable for RedBlackTree range

[Meta via Digitalmars-d-learn]

On Wednesday, 2 May 2018 at 10:39:29 UTC, ag0aep6g wrote:
On 04/28/2018 06:36 PM, Gerald wrote:
What is the appropriate way to create a variable for the range 
returned by RedBlackTree lowerBound and upperBound. For 
example, given this code:

```
RedBlackTree!long promptPosition = redBlackTree!long();

long row = to!long(vte.getVadjustment().getValue());
RBRange!(RBNode!long*) range;
[...]
}
```

The second line where I declare the range variable as 
RBRange!(RBNode!long*) the compiler complains with the 
following warning:

Deprecation: std.container.rbtree.RBRange(N) is not visible 
from module terminal

Which makes sense since RBRange is a private struct.

RedBlackTree also has public range types: Range, ConstRange, 
ImmutableRange. And `RedBlackTree!long.Range` is an alias for 
`RBRange!(RBNode!long*)`.

So:

    RedBlackTree!long promptPosition = redBlackTree!long();
    RedBlackTree!long.Range range;

For completeness' sake, and if you don't want to re-specify the 
template parameters you passed to RedBlackTree, you can write:

promptPosition.Range range;