Apply "whos" to fields of a struct to get their sizes?

Question

FM 2022-4-27

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https://ww2.mathworks.cn/matlabcentral/answers/1706745-apply-whos-to-fields-of-a-struct-to-get-their-sizes

编辑： FM 2022-4-27

The command "whos" shows the sizes (in bytes) [of the data objects/variables in the base workspace. Is there a way to get that information for the fields of a struct?

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Answer 1

Matt J 2022-4-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1706745-apply-whos-to-fields-of-a-struct-to-get-their-sizes#answer_952480

编辑：Matt J 2022-4-27

在 MATLAB Online 中打开

Something like this, perhaps?

a=rand(100); b=1:4;
S.a=a; S.b=b;
Sbytes=whosstruct(S);
whos a b
  Name        Size             Bytes  Class     Attributes

  a         100x100            80000  double              
  b           1x4                 32  double              
Sbytes
Sbytes = struct with fields:
    a: 80000
    b: 32
function Sbytes=whosstruct(S)
   for fld=fieldnames(S)'
      val=S.(fld{1});
      tmp=whos('val');
      Sbytes.(fld{1})=tmp.bytes;
   end
end