Find all the empty cells?

Suppose I have a cell array which looks like this:


C =
[] [] []
[] [] [3x3 double]
[] [] []

How can I get all the empty cells using as few commands as possible? Well, the answer is …

cellfun(@isempty, C)

So, cellfun is a function that applies a function (isempty here) to each cell of a cell array (C here). If you enjoy general Matlab functions that implicitly apply to each element of an array (say, sqrt(M) does the square roots to all the elements of M), then you must also enjoy this cellfun function that applies an arbitrary function to each element of a cell array. Check it out!