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I swear to god "old school" C++ devs are menace to humanity
Why yes let's make this one line long function, that could even be constexpr, and make it a macro.
Why the fuck not, let's make compiler errors worse by foregoing any type checking. Let's throw away namespacing as well, great.
Fuck you.
I shouldn't have to dig through 4 levels of nested macros just cause "muh performance" and "we've always done it like that".
Shit yourself.8 -
!rant
For all of youse that ever wanted to try out Common Lisp and do not know where to start (but are interested in getting some knowledge of Common Lisp) I recommend two things:
As an introductory tutorial:
https://lisperati.com/casting.html/
And as your dev environment:
https://portacle.github.io/
Notice that the dev environment in question is Emacs, regardless of how you might feel about it as a text editor, i can recommend just going through the portacle help that gives you some basic starting points regarding editing. Learn about splitting buffers, evaluating the code you are typing in order for it to appear in the Common Lisp REPL (this one comes with an environment known as SLIME which is very popular in the Lisp world) as well as saving and editing your files.
Portacle is self contained inside of one single directory, so if you by any chance already have an Emacs environment then do not worry, Portacle will not touch any of that. I will admit that as far as I am concerned, Emacs will probably be the biggest hurdle for most people not used to it.
Can I use VS Code? Yes, yes you can, but I am not familiar with setting up a VSCode dev environment for Emacs, or any other environment hat comes close to the live environment that emacs provides for this?
Why the fuck should I try Common Lisp or any Lisp for that matter? You do not have to, I happen to like it a lot and have built applications at work with a different dialect of Lisp known as Clojure which runs in the JVM, do I recommend it? Yeah I do, I love functional programming, Clojure is pretty pure on that (not haskell level imo though, but I am not using Haskell for anything other than academic purposes) and with clojure you get the entire repertoire of Java libraries at your disposal. Moving to Clojure was cake coming from Common Lisp.
Why Common Lisp then if you used Clojure in prod? Mostly historical reasons, I want to just let people know that ANSI Common Lisp has a lot of good things going for it, I selected Clojure since I already knew what I needed from the JVM, and parallelism and concurrency are baked into Clojure, which was a priority. While I could have done the same thing in Common Lisp, I wanted to turn in a deliverable as quickly as possible rather than building the entire thing by myself which would have taken longer (had one week)
Am I getting something out of learning Common Lisp? Depends on you, I am not bringing about the whole "it opens your mind" deal with Lisp dialects as most other people do inside of the community, although I did experience new perspectives as to what programming and a programming language could do, and had fun doing it, maybe you will as well.
Does Lisp stands for Lots of Irritating Superfluous Parentheses or Los in stupid parentheses? Yes, also for Lost of Insidious Silly Parentheses and Lisp is Perfect, use paredit (comes with Portacle) also, Lisp stands for Lisp Is Perfect. None of that List Processing bs, any other definition will do.
Are there any other books? Yes, the famous online text Practical Common Lisp can be easily read online for free, I would recommend the Lisperati tutorial first to get a feel for it since PCL demands more tedious study. There is also Common Lisp a gentle introduction. If you want to go the Clojure route try Clojure for the brave and true.
What about Scheme and the Structure and Interpretation of Computer Programs? Too academic for my taste, and if in Common Lisp you have to do a lot of things on your own, Scheme is a whole other beast. Simple and beautiful really, but I go for practical in terms of Lisp, thus I prefer Common Lisp.
how did you start with Lisp?
I was stupid and thought I should start with it after a failed attempt at learning C++, then Java, and then Javascript when I started programming years ago. I was overwhelmed, but I continued. Then I moved to other things. But always kept Common Lisp close to heart. I am also heavy into A.I, Lisp has a history there and it is used in a lot of new and sort of unknown projects dealing with Knowledge Reasoning and representation. It is also Alien tech that contains many things that just seem super interesting to me such as treating code as data and data as code (back-quoting, macros etc)
I need some inspiration man......show me something? Sure, look for a game called Kandria in youtube, the creator, Shimera (Nicolas Hafner) is an absolute genius in the world of Lisp and a true inspiration. He coded the game in Common Lisp, he is also the person behind portacle. If that were not enough, he might very well also be Shirakumo, another prominent member of the Common Lisp Community.
Ok, you got me, what is the first thing in common lisp that I should try after I install the portacle environment? go to the repl and evaluate this:
(+ 0.1 0.2)
Watch in awe at what you get.
In the truest and original sense of the phrase (MIT based) "happy hacking!"10 -
So at work, there is this class/model thing that's for storing translated strings. It also supports n-level nested macros, cascading lookup (e->d->c->b->a->blank), and I've added transforms too. The code is a bloody mess and very inefficient (legendary dev's code), but it's useful.
You call methods with a symbol representing one of the strings, and it does... whatever you ask, like return text, booleans, expand macros and submacros, pass in data to interpolate, etc.
But I just learned something today.
Its `.html` method... doesn't support html. In fact, calling it strips out all html, takes whatever is left, and attempts to convert that back into html. Because that makes so much sense. So, if you have an html string? Don't call html on it.
Also, macros use the same <angle brackets> as html tags, and macro expansion eats unknown macros, so... you can't mix html and macros, meaning you cannot inject values into your markup. That's a freaking joy to work around. (You end up writing a parser every time.)
So no, if you have an html string, you need to get the raw data out and handle it yourself. Don't reach for that shiny .html method; it'll just ruin your day.
It's the little things that make my day so terribly long.8 -
My preprocessor is just generalized kerning, the macros are variations on the single well-known proof for the Turing-completeness of GK, the type system will probably be a Prolog reskin so simple the translator can be a FSM, the type inference algo is the original HM algorithm which I don't even need to change, the core language is Lambda calculus and no more, and the backend might just be Erlang itself if my research confirms that extending LLVM until it consistently beats Erlang is unrealistic.
I invented nothing, I create nothing. All I do is plug circles into square holes and fill the gaps with play dough.5 -
Looking further into Rust, the macros are quite sexy. My first reaction was "omg really"? But then I learned that macros in Rust are nothing like macros in C++.
Again, comparing with my favorite language Swift, it feels like Rust macros are somewhat similar to result builders (formerly named function builders). Or they they have a similar purpose. Both evaluate to some type safe result at compile time and are a perfect tool to make DSLs.
But Rust’s macros can do even more than that. It’s truly amazing.2 -
Make good progress on Orchid, my pet project, the functional programming language that has no syntax apart from what the macros define. A type system, an interpreter and provisions for a compiler would be nice for a start.
Finish my bachelor's degree on some unspecified part of Orchid, at the current pace that would most likely be just the Hindley-Milner algorithm.
Don't get fired from the gem of a job I have, and move to London because I'm a city rat and the only way I can sleep well apparently is with a tram or drunken people screaming under my window.2 -
Have an object that uses a macro to define its function bodies. I needed to interface to that object in a different way. So I wrote and object that calls functions on that object and presents a different interface. I used macros to define the function bodies...
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Looking for good literature regarding CRUD. Basically i want to have a list of possible dataoperations nowadays. And the relations to commands like Copy, Paste, Search, List, Undo Redo, Macros etc. Any suggestions?16
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