yield return range

[rromerik]

a lot of time, when parsing a graph, we have to return all the childs elements...

IEnumerable GetNames()
{
yield return Name;
foreach(var child in Childs)
{
foreach(var name in child.GetNames())
yield return name;
}
}

would be nice to have a yield return range
IEnumerable GetNames()
{
yield return Name;
foreach(var child in Childs)
{
yield return range child.GetNames();
}
}

[HaloFour]

#378

[rromerik]

thanks I did search before posting, didn't find it!

[HaloFour]

No worries, even when the title is more obvious it can be difficult to find existing discussions/proposals. 😄

[spydacarnage]

In the meantime, you could also (in this case, at least), use:

IEnumerable GetNames()
{
    yield return Name;
    foreach (var name in Childs.SelectMany(c => c.GetNames())
    {
        yield return name;
    }
}

[leandromoh]

F# has yield and yield! (reads as yield bang) operators! this last is like your yield return range operator
https://stackoverflow.com/a/44947859/4854924