Dyalog Forums

I don't have a Linux Mint to hand. However, you want to look for a switch groups (or layouts) option rather than the level selector you have enabled. On my KDE this is in the GUI as "Switching to another layout". I would expect Cinnamon to use exactly the same wording. I would, also, suggest you ...

System commands like )fns, )vars, ... show the names as if there was no stack. If you do )sinl all will become clear. ⎕NL shows names that can be seen in the current state of the stack. This behaviour difference was inherited from historical APLs. If you want to go deeper then ⎕STATE will enable you ...

⎕MAP produces an array that has reference semantics. Namespaces also have reference semantics. You break these by using indexing. So a←80 1 2 3 ⎕map '/dev/zero' maps /dev/zero which, on Unix/Linux/MacOs, is a "file" that reads as an infinite length - all zeros. So I now have a 3 dimensional array of ...

Peter:

Did you see that bit pattern with other values than 128? It still feels to me like a sign extension problem. Be patient - I will get to it. It is logged as issue 14591.

Hmm. U1 gives you range checking on the APL side. This feels more like a problem with sign extension as it goes from 1 byte to 4. I will log an issue. Since the work around is easy (whilst sacrificing range checking) it might not get high priority.

Sorry Ray. There is a reason why I am not responsible for Dyalog's documentation.

The gpioSetAlertFunc is exactly the sort of function I said we cannot support. What this is doing is remembering a function address for later use and then returning. Sometime later it makes a call to the supplied function address. Unfortunately, on the APL side all of the information and indeed the ...

Callback support is for a callback from a ⎕NA'd function that has been invoked. There is no support for just leaving the possibility of calling back into apl whilst it is doing other things. So you can give a callback function as an argument to a ⎕NA'd function. That function can call the callback. O ...

What is the specification for the callback arguments? Whilst we put in enough support for NAG it is more general than just that. We can cope with register sized arguments. Pointers are register sized. So are integers. Structures are, generally, not. What we did when supporting NAG is to receive the ...

At the end of this month I will have worked for Dyadic and then Dyalog for 40 years. Dyalog are having an open house reception here in Bramley from 14:00 - 18:00 to provide an opportunity to celebrate/commiserate on Friday 3rd February. All APLers are welcome just email karen@dyalog.com so we have ...