Quick question

[Ruby The Roobster via Digitalmars-d-learn]

I have  question here. Is there a difference between .sizeof and 
.length(of a char[])? For example, let's say you have the 
following array: char[2][] members.
Is it possible for members[0].sizeof == members[1].sizeof but 
members[0].length != members[1].length? Thanks in advance.