what is the purpose of the @ symbol in front of a variable in octave?

问题

For example:

model = svmTrain(X, y, C, @(x1, x2) gaussianKernel(x1, x2, sigma)); 

Disclaimer: This is from the Coursera ML class, but it's nearly impossible to search for the @ symbol conventionally.

回答1:

@ prefixes the definition of an anonymous function.

回答2:

Also, @ is used to demark a function handle.

来源：https://stackoverflow.com/questions/25355028/what-is-the-purpose-of-the-symbol-in-front-of-a-variable-in-octave