[Octave-bug-tracker] [bug #65877] struct field assignment using {:} produces invalid dimension error

[Sonu0305]

Follow-up Comment #3, bug #65877 (group octave):

I agree that the issue arises because Octave performs a dimension inquiry on a
non-existent value, whereas MATLAB implicitly creates the struct and field
during assignment.

octave:1> A.a = {1};
octave:2> A
A =

  scalar structure containing the fields:

    a =
    {
      [1,1] = 1
    }


octave:3> value = A.a{1};
octave:4> value
value = 1

This approach provided by you is indeed clearer and achieves the desired
result.

Also, for advance cases we can use the *subassgn* function:

octave:5> A = struct();
octave:6> A = subsasgn(A, substruct('.', 'a', '{}', {1}), 1);
octave:7> A
A =

  scalar structure containing the fields:

    a =
    {
      [1,1] = 1
    }


octave:8> value = A.a{1};
octave:9> value
value = 1

This approach also helps us achieve the desired result.

Thank You,
Swayam (Sonu0305)


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