method syntax for handle objects
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For handle class methods, would there be any performance difference between the two implementation below?
function initializeMesh(obj,tempVertices,tempFaces)
end
function obj = initializeMesh(obj,tempVertices,tempFaces)
end
I know the lower of the two is a little more flexible syntatically in that both:
meshInstance.initializeMesh(tempVertices,tempFaces)
and
meshInstance = meshInstance.initializeMesh(tempVertices,tempFaces)
are allowed and seem to produce the same result. I'm leaning towards include the obj return for that reason. Is there anything I'm missing here that might make the returnless method better?
采纳的回答
Well, the second syntax is the one you would normally use if the method is intended to return a new, freshly constructed, independent instance of the class. If that's not the case, then future developers of your code might look at it and mistakenly assume that this,
meshInstance2 = meshInstance1.initializeMesh(tempVertices,tempFaces)
will result in separate instances of the class meshInstance1 and meshInstance2.That can be a dangerous mistake to make. In later lines of code, you think that manipulations of meshInstance2 are not affecting meshInstance1, when in fact they are.
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