You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: any.m
    path of file: ./repos/chebfun/@classicfun
    
    the code of the file until where you have to start completion: function a = any(f, dim)
%ANY   True if any element of a CLASSICFUN is a nonzero number. ANY ignores
%      entries that are NaN (Not a Number).
%   ANY(X, DIM), where X is an array-valued CLASSICFUN, works down the dimension DIM.
%   If DIM is 1, then ANY returns a logical row vector in which the Jth element
%   is TRUE if any element of the Jth column is nonzero.  If DIM is 2, ANY
%   returns a CLASSICFUN which takes the value 1 wherever any of the columns (or rows)
%   of X are nonzero, and zero everywhere else.  In this case, X must either be
%   identically zero or have no roots in its domain.  Otherwise, garbage is
%   returned without warning.

    
function a = any(f, dim)
%ANY   True if any element of a CLASSICFUN is a nonzero number. ANY ignores
%      entries that are NaN (Not a Number).
%   ANY(X, DIM), where X is an array-valued CLASSICFUN, works down the dimension DIM.
%   If DIM is 1, then ANY returns a logical row vector in which the Jth element
%   is TRUE if any element of the Jth column is nonzero.  If DIM is 2, ANY
%   returns a CLASSICFUN which takes the value 1 wherever any of the columns (or rows)
%   of X are nonzero, and zero everywhere else.  In this case, X must either be
%   identically zero or have no roots in its domain.  Otherwise, garbage is
%   returned without warning.
%
%   ANY(X) is shorthand for ANY(X, 1).

% Copyright 2017 by The University of Oxford and The Chebfun Developers.
% See http://www.chebfun.org/ for Chebfun information

if ( nargin < 2 )
    dim = 1;
end