reduce condition nesting

[Andrey via Digitalmars-d-learn]

Hello, is there way to reduce this condition:

if (c1) {
    foo();
} else {
    if (c2) {
        bar();
    } else {
        if (c3) {
        ...
        }
    }
}

for instance in kotlin it can be replace with this:

when {
    c1 -> foo(),
    c2 -> bar(),
    c3 -> ...
    else -> someDefault()
}