How can I assign a set of data from a 'meta.class' object propertys to a string array without using a loop statement?

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fa wu 2023-8-20

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2010577-how-can-i-assign-a-set-of-data-from-a-meta-class-object-propertys-to-a-string-array-without-using

评论： fa wu 2023-8-21

When I run 'mc=?ClassA' in command line, I got a meta.class object mc. mc.MethodList.Name store all the motheds of ClassA

I run 'K=[mc.MethodList(:,1).Name]' in command line,I got :

K = 'ClassAemptyeqneltgtlegedeleteisvalidfindpropnotifynotifyaddlistenerlisteneraddlistenerlisteneraddlistenerlisteneraddlistenerlisteneraddlistenerlistenerfindobj'

I want to separate the 24 concatenated "method names." like this：

K=['ClassA' 'empty' …………]

I've tried several methods, and only the following approach works, but it requires a lot of code. I'd like to know if there's a simpler way to achieve the same result？

b=cell(1,24);

[b{1,:}]=deal('');

[b{1,1},b{1,2}]=deal(mc.MethodList(1,1).Name,mc.MethodList(2,1).Name);

b{1,1}

ans = 'ClassA'

b{1,2}

ans = 'empty'

If you want to complete all variable assignments, you need the following code:

[b{1,1},b{1,2},…………]=deal(mc.MethodList(1,1).Name,mc.MethodList(2,1).Name,…………);

ClassA.m

classdef  ClassA < handle
    properties (SetObservable)  %或(SetObservable=true)
        x=1;
        y=2;
    end
    events
        kk
    end
    methods
        function obj=ClassA()
            x=1;
        end
    end
end

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Stephen23 2023-8-20

"I'd like to know if there's a simpler way to achieve the same result"

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html

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Answer 1

Bruno Luong 2023-8-20

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2010577-how-can-i-assign-a-set-of-data-from-a-meta-class-object-propertys-to-a-string-array-without-using#answer_1289967

编辑：Bruno Luong 2023-8-20

在 MATLAB Online 中打开

ClassA.m

cellarray... not array

mc=?ClassA;
K={mc.MethodList.Name}
K = 1×24 cell array
  Columns 1 through 15

    {'ClassA'}    {'empty'}    {'eq'}    {'ne'}    {'lt'}    {'gt'}    {'le'}    {'ge'}    {'delete'}    {'isvalid'}    {'findprop'}    {'notify'}    {'notify'}    {'addlistener'}    {'listener'}

  Columns 16 through 24

    {'addlistener'}    {'listener'}    {'addlistener'}    {'listener'}    {'addlistener'}    {'listener'}    {'addlistener'}    {'listener'}    {'findobj'}
%or if prefer
M=string(K)
M = 1×24 string array
  Columns 1 through 17

    "ClassA"    "empty"    "eq"    "ne"    "lt"    "gt"    "le"    "ge"    "delete"    "isvalid"    "findprop"    "notify"    "notify"    "addlistener"    "listener"    "addlistener"    "listener"

  Columns 18 through 24

    "addlistener"    "listener"    "addlistener"    "listener"    "addlistener"    "listener"    "findobj"