How to require a custom class type with addRequired?
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I have a custom class,
classdef foo
properties
%Property stuff
prop1;
end
methods
function obj = foo( )
%Constructor stuff.
obj.prop1 = 'test';
end
end
end
and I want the input of a function to require that the variable type is this custom class.
function out = fun( varargin )
p = inputParser;
addRequired( p, 'InputName', @(x) isa( x, 'foo' ) );
parse( p, varargin{:} );
% Function stuff
end
When I try doing this
% Script.
objInstance = foo();
out = fun( 'InputName', objInstance )
I get this error:
" The value of 'InputName' is invalid. It must satisfy the function: @(x)isa(x,'foo'). "
采纳的回答
Steven Lord
2019-12-5
If you're using release R2019b or later, consider using function argument validation instead of inputParser.
But if this function requires an input of this class, should it be a separate function or should it be a method defined inside the class itself?
classdef foo
methods
function out = fun(x)
% x MUST be a foo (which could mean it's a subclass of foo)
end
end
end
更多回答（1 个）
Luna
2019-12-5
0 个投票
Variable out is not defined in the function bar. Also bar is already a built-in function. Use another function name instead.
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