Splitting a string treating multiple whitespace as one separator

I want to split a string in D programming language, so that elements that are empty strings, are not counted.

Example:

Input : This is a string [Note that between is and a, there are 3 blank spaces]

Output: [This, is, a, string]

Problem

If I use the std.array.split [linked here] function with " " (blank space) as delimiter, then I get: ["This", "is", " ", "a", "string"]. See the blank element between "is" and "a".

My Current solution

output = input.split(" ").filter!(l => !l.strip().empty).array;

Note, that this would also be possible if multiple consecutive blank spaces were treated as one.

My question

Does the split function (or an alternative) has a built in method to either:

automatically treat multiple consecutive occurrence of the delimiter as one,
automatically reject elements that are whitespace only

Either of these two will be sufficient for this particular example (I can't think of a counterexample)

I looked at Programming in D – Tutorial and Reference by Ali Çehreli [here], but i can't seem to find this functionality. Does that mean in D you are supposed to use the filter and Lambda?

Thank you for your help.

Solution

split without any parameters does exactly what you are requesting:

When no delimiter is provided, strings are split into an array of words,
using whitespace as delimiter. Runs of whitespace are merged together
(no empty words are produced).

(this is a quote from the documentation which you linked to)