function someFunc( someInput )
narginchk( 0, 1 )
if ~exist( 'someInput', 'var' )
someInput = 7;
end
...
end
Generally I add an extra line something like the following, but I'm fussy:
if exist( 'someInput', 'var' )
validateattributes( someInput, { 'double' }, { 'scalar', 'nonnegative' } )
else
someInput = 7;
end
