Behaviour change of `isequal`

which isequal('a','a')
built-in (/MATLAB/toolbox/matlab/elmat/@char/isequal)  % char method
which isequal("a","a")
isequal is a built-in method  % string method
which isequal('a',"a")
isequal is a built-in method  % string method
which isequal("a",'a')
isequal is a built-in method  % string method

tommsch 2024-3-1

I indeed have R2018a too. Thanks everybody for the effort.

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Answer 2

cui,xingxing 2024-3-1

1
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https://ww2.mathworks.cn/matlabcentral/answers/2089026-behaviour-change-of-isequal#answer_1419546

编辑：cui,xingxing about 10 hours 前

在 MATLAB Online 中打开

Hi,@tommsch

As far as I understand, in both R2018b and R2020a version results return logic 1, not different as you said.

R2018b

https://ww2.mathworks.cn/help/releases/R2018b/matlab/ref/isequal.html?s_tid=doc_ta#bt3fx0g-1

R2020a

https://ww2.mathworks.cn/help/releases/R2020a/matlab/ref/isequal.html?s_tid=doc_ta#bt3fx0g-1

Note:

For Inputs to be compared (as separate arguments) A,B, the documentation has the following description(R2018 and R2020 are both identical):

String scalars and character vectors containing the same sequence of characters are equivalent.

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Latest R2023b

isequal('ab',"ab")
ans = logical
   1

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