digitalmars.D.learn - "Best" way of handling a receive()d message with a class instance.
- Francesco Cattoglio (25/25) Jan 23 2014 Suppose that I receive a message, but instead of defining a
- Francesco Cattoglio (6/6) Jan 23 2014 Sorry, MY BAD!
- Meta (12/18) Jan 23 2014 It's also useful to mention that in this code here:
Suppose that I receive a message, but instead of defining a function inside the receive() block, I want to call a member of a class instance. (This is useful to me for several reasons). Right now my code looks like: class Handler { auto handle() { return (string msg) { writeln("received: ", msg, " count: ", i); }; // this ';' ends the return statement } // handle() private: i; } //somewhere inside main auto handler = new Handler; receiveTimeout( dur!"seconds"(1), handler.handle ); It works, but I must say I'm not even sure about what the hell I am doing :D If I got it correctly, I'm calling a function that returns a delegate, which is used by the receiveTimeout() somehow to dispatch the message (and everything is in some way decided at compile time, I believe). Does this ugly piece of code make any sense? Should I rework it?
Jan 23 2014
Sorry, MY BAD! You can just write auto handler = new Handler; receive(&handler.MyFunc); Somehow when I tried this before it failed to compile, and I thought I had to go through loops for achieving this.
Jan 23 2014
On Thursday, 23 January 2014 at 16:00:30 UTC, Francesco Cattoglio wrote:Sorry, MY BAD! You can just write auto handler = new Handler; receive(&handler.MyFunc); Somehow when I tried this before it failed to compile, and I thought I had to go through loops for achieving this.It's also useful to mention that in this code here: auto handler = new Handler; receiveTimeout( dur!"seconds"(1), handler.handle ); The expressions handler.handle is actually invoking the method handle(). This is due to parentheses being optional in D, which means that even the function name without the parentheses is a valid function call. I don't know if you knew that or not, just in case you didn't.
Jan 23 2014