what is the meaning of @ in matlab code?

Question

Kobi 2019-4-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/457992-what-is-the-meaning-of-in-matlab-code

回答： Satish Shenkar 2021-3-14

采纳的回答： Girish babu P

在 MATLAB Online 中打开

Hi all,

i just downloaded a matlab function from some website and saw something strange

if ~isa(A, 'function_handle')
   AT = @(x) A'*x;
   A = @(x) A*x;
end

what is the meaning of @?

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Kobi Aflalo 2019-4-23

The link you sent is a general documentation Where is the explanation

Stephen23 2019-4-23

Here:

https://www.mathworks.com/help/matlab/function-handles.html

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Answer 1

Girish babu P 2019-8-22

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/457992-what-is-the-meaning-of-in-matlab-code#answer_388584

An anonymous function is like an inline function in traditional programming languages, defined within a single MATLAB statement. It consists of a single MATLAB expression and any number of input and output arguments.

You can define an anonymous function right at the MATLAB command line or within a function or script.

This way you can create simple functions without having to create a file for them.

The syntax for creating an anonymous function from an expression is

f = @(arglist)expression

https://www.tutorialspoint.com/matlab/matlab_functions.htm

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Girish babu P 2019-8-26

编辑：Guillaume 2019-8-26

在 MATLAB Online 中打开

f = @myfunction;

Now if you have a function like

function y = compSqure(x)
y = x.^2;
end

 f = @compSqure;
 a = 4;
 b = f(a)

will give

b = 16

1. https://www.mathworks.com/help/matlab/matlab_prog/creating-a-function-handle.html

https://www.mathworks.com/help/matlab/matlab_prog/anonymous-functions.html

plz gothrough this links.

Guillaume 2019-8-26

I have no idea what point you're trying to make but note that you started talking about anonymous function, your new comment demonstrates function handles which are not the same as anonymous functions (despite both using the symbol @)

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