LispForum

That used to be what I used to read the Hyperspec, but I can't even ping it these last few weeks.

nikodemus: Thanks for the advice; exporting the function (as well as moving the definition outside the macro) is what I decided on doing. death: I'll keep all that in mind, it sounds like great advice, but my thinking is that there are certain macros which establish a context in which the body oper...

dmitry_vk: Oh, I see. Thanks for the explanation, that makes sense. death: Eventually the charts will get more complicated, and I think it will be more useful for the user to have a little more flexibility in how they specify things. For example, I'm already starting to code for one of those donut ...

Oh my, I suppose I should have realized that of course I should be referencing ADD-SLICE by the package in the code that the user would write. Sorry, programming late at night. Still, I find it a bit odd that I could not find mention anywhere of the accident of having stuff bound in a macro expansio...

Hello, friendly and knowledgeable fellow Lispers. I'm trying to write a little library to provide charting capabilities over Vecto. For my first task, I'm trying to mimic Vecto's method of drawing images but at a slightly higher level (for the user). So I've provided a WITH-PIE-CHART macro that the ...

So my question, stated with the most precision I can muster at this stage of my learning, is, given that a macro seems to at most be able to refer to the text (so to speak) of its arguments, does that not necessarily mean that once one is using a macro (let's call it m ) which does not itself evalu...

@Ramarren Sorry for my imprecise language, and thanks for your time in trying to explain it. This is probably just what you've already said, but I want to restate it, even if only for my own sake. I think I understand that when a macro is "called" (encountered at compile time) it is evalua...

Which leads me to my question: is it considered acceptable style to use eval to do something like this? I typically shun the use of eval in other languages, because it's usually just a cheap way of getting something done which could be handled in more elegant ways, but with the data-is-code orienta...

I hope that helped in some way. It did, and your explanation was enlightening. I had forgotten about argument length limits as well; in my mind I was mistakenly mapping (and x y z ...) [Lisp] to something like (x AND y AND z AND ...) [non-Lisp] and I see that in point of the fact that there are len...

Hello all. I've been using Lisp in various forms for the last few years, but I've only recently started to really get into it. I find that for me to really get to know a language it helps to write some common libraries in it, so I decided to start porting some of Haskell's list library functions int...