detach - clear variable while passing to a function

func_name( detach(variable) ) Remove variable from the workspace before passing to the func_name()

In matlab, when a variable passed into a function is modified within the function, a copy of the variable is created on the fly, unless the variable is completely a temporary variable or unless the same variable is retrieved as an output argument.

detach() is a very simple function to clear the variable from the caller workspace and convert it into a temporary variable that is not accessible anymore upon return from the function call. If variable doesn't exist in another workspace, this avoids copy-on-write. detach() can also be handy for code clarity.