.length() is referenced in documentation but does not exist.

[Fiveside]

On the documentation page under examples, the following line indicates that wu iterators have a .length() method:

wu(s).takeWhile(n => n < .25).length();

However I can't find any indication of a .length() method existing in wu. I assume its just a documentation bug.

[msklvsk]

And it's needed!

[fitzgen]

Will accept a pull request implementing this and including tests.

[msklvsk]

.length() conflicts with wu.length property

[t829702]

.length() conflicts with wu.length property

why does wu.length property exists? for what, can that be re-used?

such a good feature is needed for so long time since 2016;

can @honzabrecka also add a feature-request tag? (or are you still there?)

I just recently found wu to use in some cases, but now found so many in the issues board left unattended for years, and now concerned is this really a good quality and maintained library? someone may recommend an alternative?