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What does "@" do ?

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H ZETT M il 12 Gen 2017
Commentato: Dyuman Joshi il 7 Ott 2023
So this is a simple question. I found some code that uses "@" and I looked it up in the matlab documentation, but I did not find it to be really helpfull. Can somebody explain to me what it does and when/how I want to use it ?

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Vandana Rajan
Vandana Rajan il 16 Gen 2017
Modificato: Walter Roberson il 6 Ott 2023
You might have seen function handles.
A function handle is a MATLAB® data type that stores an association to a function.
To create a handle for a function, precede the function name with an @ sign. For example, if you have a function called myfunction, create a handle named f as follows:
>> f = @myfunction;
Now if you have a function like
function y = computeSquare(x)
y = x.^2;
>> f = @ComputerSquare;
>> a = 4;
>> b = f(a)
will give
b = 16
Please go through these 2 documentation links which very clearly explains about function handles.
Yet another use of the symbol '@' is as class folder designator. An @ sign can indicate the name of a class folder, such as
See the below link for more info.
  10 Commenti
Rockford il 23 Ago 2022
It should be computeSquare, not ComputerSquare.

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Più risposte (1)

Amir Azadeh Ranjbar
Amir Azadeh Ranjbar il 6 Ott 2023
its function handle
func = @(x) x*2+10
func = function_handle with value:
ans = 20
  3 Commenti
Amir Azadeh Ranjbar
Amir Azadeh Ranjbar il 7 Ott 2023
Well, this answer that was given (6 years ago) is more confusing....
Dyuman Joshi
Dyuman Joshi il 7 Ott 2023
What makes you think it is confusing? (let alone more confusing)
And your answer does not mention important details that the accepted answer provides.

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