Can you pass a class to a Matlab Function without calling its constructor?

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MrPowerElectronics
MrPowerElectronics 2021-12-24
评论： MrPowerElectronics 2021-12-24
I want to make a function that allows an enum class to be passed to it, so that I can display some information about that class, but I don't want the constructor of the class to be called.
Ideally, the following code would work:
function [enumDescript] = myEnumerate(enum)
enumName = inputname(1);
[enumVals, enumStr] = enumeration(enumName);
enumDescript = [num2cell(double(enumVals)) enumStr];
end
where enum is an enum such as:
classdef EnumExample < Simulink.IntEnumType
enumeration
none(0)
test(1)
fail(2)
end
end
However, when calling:
>> myEnumerate(EnumExample)
this results in the following error, beacuse the function tried to instantiate the class "enum" even though there is no need for it.
Cannot call the constructor of 'EnumExample' outside of its enumeration block.
I know I can use a string as the input of the funciton like this:
>> myEnumerate('EnumExample')
but then I can't use tab-complete, which is quite annoying for this use case.

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采纳的回答

Walter Roberson
Walter Roberson 2021-12-24
No, you cannot do that.
However, I wonder if for your purposes it would be workable to
myEnumerate(?EnumExample)
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