LispForum

but writing such transformations by hand is tedious. This is lisp! ... This needs to incorporate more &key arguments, and more killing of intermediate lists, from other sources, but it can work. I don't think define-compiler-macro is the most powerful optimalization technique that can exist in ...

Reducing in place? Ok: (reduce (lambda (x y) (+ x (* 2 y))) '(1 2 3 4) :initial-element 0) what about this, then: (let ((list '(1 2 3 4))) (reduce '+ (map-into list (lambda (x) (* x 2)) list))) ? Your function unnecessarily modifies the list. What I meant is more like this: (let ((res 0) (map nil (...

One problem with higher-order functions is that they are inefficient, requiring multiple calls on their argument function. While the the built-ins, like map and mapcar, can be open-coded, that cannot be so easily done for user-written functions. Also, using higher-order functions often results in t...

It might be better to 'ship' libraries with all the dependencies packaged in then making it harder to use by having to chase broken dependencies down, imo. Of course, you have to check once in a while whether you can update the libraries you use to the newest versions of them.. Maybe implementation...

The other bad thing about QtJambi is that there are issues with memory leaks due to the way Qt disposes of objects, and the separate garbage collector in the JVM not playing nicely together. That's bad. For Gtk, memory management is better — it is easy to use it in garbage-collected language and ...

Uhm... I do not know. I think that with SBCL the GSL callings are made without copying the memory block, so I think It must be just the Lisp's one. But I am not sure. The actual error I get is: * Heap exhausted during allocation: 76496896 bytes available, 100446392 requested. With no further refere...

Is it Lisp's heap of C's heap being exhausted?

There's no doubt that it would be a significant project for a number of reasons (C++, the Qt meta object compiler, etc.) I have seen the guy doing some work on a Qt binding already and he looks a bit lonely. From the perspective of a company creating commercial software, the look of Gtk is a bit of...

There were several efforts to produce Qt binding (e.g., http://uint32t.blogspot.com/2008/07/qtlisp-looking-for-feedback.html). But binding to Qt is hard, because it uses C++ (not evene plain C++, but modified C++). There seems to be some introspection mechanism in Qt (QMetaObject), it might be possi...

A small pet idea of mine for lowering the entry barrier to CL: Select a certain subset of the CL standard, throw in some utility libraries (alexandria, cl-ppcre, something for date manipulation come to mind), document it all in a structured manner and offer a downloadable core image. What do you th...