Short-circuit logic and dynamic structure referencing: Why does this not work?

This behavior seems rather inconsistent, especially since by my understanding of short-circuit logic the A.(x) bit should not be evaluated if isfield(A,x) is false. Can someone help me understand this behavior? Thank you!

>> A = struct('apple',1, 'orange',1);
>> x = 'apple';
>> isfield(A,x) && A.(x)

ans =

       1

>> x = 'banana';
>> isfield(A,x) && A.(x)

ans =

       0

>> isfield(A,x) & A.(x)
Reference to non-existent field 'banana'.

>> for x = {'apple','banana'}
..    isfield(A,x) && A.(x)
.. end
Argument to dynamic structure reference must evaluate to a valid field name.

Answer 1

[Walter Roberson]

Nothing to do with short circuit logic.

for x = {'apple','banana'}

does not assign x = 'apple' and then x = 'banana': instead it assigns x = {'apple'} and then x = {'banana'}

[Chris]

Perfect, that's exactly the sort of detail I would have overlooked for way too long. Thank you.