# Method Function.call_callback()

Method call_callback

  ``void` call_callback(`function`(:`void`) `f`, `mixed` ... `args`)`

Description

  Call a callback function, but send throws from the callback function (ie, errors) to master()->handle_error. Also accepts if f is zero (0) without error.

Example

      Functions.call_callback(the_callback,some,arguments);equals
      {
           mixed err=catch { if (the_callback) the_callback(some,arguments); };
           if (err) master()->handle_error(err);
        }
      (Approximately, since call_callback also calls handle_error
       if 0 were thrown.)