function explanation @(XTRAIN, ytrain,XTE​ST)(classi​fy(XTEST,X​TRAIN,... ytrain));

Can somebody explain me this funcion... Or give me some reference for that function. @(XTRAIN, ytrain,XTEST)(classify(XTEST,XTRAIN,... ytrain));

thanks

[Muhammad Yasir]

It's an anonymous function handle. Which represents single inline executable expressions that return one output.

To define an anonymous function, enclose input argument names in parentheses immediately after the @ operator, and then specify the executable expression.

For example, create a handle to an anonymous function that evaluates the expression x2 − y2:

f = @(x,y) (x.^2 - y.^2);

Anonymous functions can accept multiple inputs but return only one output.

In your question the input argument names are : XTRAIN, ytrain,XTEST

While, the executeable expression is : classify(XTEST,XTRAIN,... ytrain)