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Well, APL is quite readable to mathematicians. (Or at least a certain share.)
APL was not developed as a programming language at all, but as a notation for teaching the math of matrices. Kenneth Iverson used it as "blackboard language" for a number of years when lecturing at Harvard in the late 1950s. It wasn't until he quit teaching and moved to IBM some of his workmates said something like "Hey, we could make a computer do these operations!"
But I must admit that you are right: APL is definitely not a language that you will learn in two weeks. And you must keep on using it, otherwise you will forget so much that you will have to dig up your old APL textbook to find any sense in the APL programs you wrote yourself a few years ago.
My first programming language was Basic - a very basic one, with at most 286 variables named A-Z or A0-A9 to Z0-Z9, and 26 string variables A$-Z$. My next language was APL, and I was extremely impressed by its power, compared to Basic. (I was 17 at the time.) I still have my APL textbook, and I'd love to pick it up again - just for doing programming that is very different from at least 95% of all programming done today. (I just need a tuit.)
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If I had the inclination to learn APL, I suspect I would end up using it like I use regex, not as a language exactly, since I don't think I'd ever write the entirety of a program in it, just a hard-coded string that gets fed to an interpreter by the primary language for the specific operations it's good at. I do not consider regex a language because the definition of loop would have to be stretched to call it turing complete, and I would hate to think about calling functions or 3rd party libraries with it (no idea if that's even possible in APL but even if it is, I doubt I'd use it).
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(I just need a tuit.)
Will an oval one do? Or does it have to be round?
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Thanks a lot for your kind offer to provide an oval one, but I guess I need the round type to get further with my APL activity.
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As an applied math major at an engineering-focused school back in the 80s I actually had APL as a required 1-credit course. I kind of enjoyed it *because* it was a little arcane.
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My categories are :
1. Languages I like to work with
2. Languages I would like to investigate
3. Languages I have zero interest in
Regarding compiled vs. interpreted languages - I wrote my own language once. It started out interpreted and then I changed it to compile to native machine code. That was really fun and resulted in no changes to the language itself. In my opinion, languages are not inherently compiled or interpreted. Their implementations are what make the distinction.
"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"
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Memtha wrote: Type
Exactly.
Is it strong-typed? Can it reflect on itself? Does it support function programming expressions? Does it supported anonymous types and functions? Is it compiled (the classic definition of compiled, IL included.)
If yes, I like it.
If somewhat yes, I tolerate it.
If no to all, I won't use it.
That means:
C#: yes
TypeScript: tolerated yes
JavaScript, Ruby, Python, etc: I won't use it.
Now, granted, I do like Python for certain things. There's always exceptions to the rule.
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Agreed with strong-typed and compiled. I personally cannot stand reflection because it tends to loose the benefits of strong-typed because string mangling at runtime can't really be compiler checked. Example: I am presently building (not by choice) a scheduling system that pulls the assembly name, type name and method name from sql, loads the assembly, finds the type and method and runs it. If some bonehead comes along and changes the method signature, no compiler errors will occur but the task will fail at runtime.
Anonymous types and functions (and especially lambda and "properties") are perfect examples of the kind of fluff I despise in C#. It does not take that much longer to make proper named classes and functions, and is much more readable and reusable. The extra time will pay for itself later when I don't have to go to the docs to find the implied return type of my function based on what it is being passed to.
As trønderen wrote above: Typing should be explicitly visible in the program text, and clearly identified as a type.
"
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functional vs. imperative and general purpose vs. domain specific are my main delineations.
beyond that, "interpreted" vs "static compiled" vs "JIT compiled" is technically an implementation detail. Consider Javascript - initially interpreted, now JIT compiled. It's why I don't consider that when I deal in languages
For me it's about what I can do with it, not even "how" I do it. Although I do consider the form of typing (duck typing, static typing, etc) when evaluating a language.
Real programmers use butterflies
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Does it solve my problem? Yes/No
C# usually does, JavaScript occasionally does, SQL sometimes does, Regex rarely does...
As a PLC programmer you're probably using C or Rust, but as a web developer those aren't really viable choices, C# and JavaScript are.
Golf-oriented gibberish never solves my problem, that's more for fun and giggles.
That's not to say I like all those languages equally, but I'll learn/use them when I have to.
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My categories are :
Do I know it?
Do I need to know it?
Do I want to know it?
Am I sufficiently not lazy to learn it?
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My categories ain't terribly different from yours. I categorize by what they value:
-backwards-continuity
-a certain principle or set thereof
-pragmatism as in "getting things done without standing in the way", which would be the good ones
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The good, the bad and the ugly.
Ugly) The languages that my colleagues prefer that I don't like
Bad) Languages that neither my colleagues or I use
good) The languages I use.
Nothing succeeds like a budgie without teeth.
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I categorize them thus:
1) Me no likey
2) Looks interesting and useful
3) Yes please!
Based solely on taste as far as I can tell 
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Honestly mostly I just think in terms of whether or not a given language is suitable for my current task.
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I would divide general purpose languages into categories (not all fitting languages are listed):
1. Assemblers
2. C, C++
3. Java, C#
4. Python, JavaScript
5. Perl, TCL
Anything that is not like the 5 categories above is not worth categorizing.
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To me, that is two different languages: You've got (several dialects of) algorithmic language. And then there are those "not worth categorizing".
A programming language is usually a syntax, but much more a way of thinking of a problem solution. There is little difference in the way you break down the problem and model in a solution between C and Pascal, and for that sake assembler. Lisp is a completely different way of attacking it. APL yet another way. Prolog resembles none of them (some people may see resemblances at the abstract level between Prolog and Lisp, but on the very abstract level).
I haven't been asked for which languages I know for many years. In those days when languages were really developing, and new concepts arrived quite often (maybe after having been discussed in academica for years before arriving in the programming marketplace), I used to answer that I know:
* Algorithmic, with dialects like Fortran, Pascal, Basic, C whatever, Java, Python, CHILL, asseblers ...
* Array & workspace: APL (Smalltalk is workspace, too, but I never used that)
* Predicate: Prolog, SNOBOL, XSLT, regex. Maybe SQL fits into this group.
* List & functional: Lisp
* Job scripting: .sh and all its variants, .bat files, lots of others.
* Data definition languages: ASN.1, XAML, the DDL part of SQL, XML schema languages (several), JSON, ...
I am somewhat tempted to add:
* Event driven: Win core API, OSI communication protocols.
even though is not a language in the syntax sense, but certainly a quite different way of programming, and thinking about program design, compared to the monolithic, single thread from-start-to-end style of C and Pascal. The Win core model also has significant elements of workspace philosophy. I believe Erlang also comes in the event driven class, but I never went much beyond 'the Hello World level' when I had a short glimpse on Erlang many years ago.
There is a question of where to draw the line for what is "languages". Is regex a language? XML/html/TeX/SGML/...? General macro programming languages? 'Macro' programming internal to one specific application? The programming language of the HP 41C calculator?
I think it is a pity that we today try to mold force all sorts of programming into the C style of algorithmic thinking. That thinking pattern is all that most young programmers know of; they never consider a predicate approach, a list approach, a workspace solution model. You see some small traces of other elements, e.g. a regex of half a line - but it is treated similar to another operator in algorithmic C-style. regex and Prolog are different worlds. As are new() versus APL/Smalltalk workspace concepts.
I am happy to have had my professional upbringing during years when different ways of thinking about programming was encouraged and considered valuable.
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easy to install and execute simple code programming language
vs
do obstacle course, restart computer, nope wrong version for this specific platform, you need to recompile with the argument nag, missing manifest file programming language
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I'd say that, too, is not really the language's fault so much as the compiler, the standard libs, the community that uses it and even the specific project. There's nothing stopping a compiler from being invented that can work in-place with no environment configuration, yet you get things like C# where you have to install an ide to get the compiler; or else you get a project with so many dependencies the odds of everything just working are low.
That's about the fifth time I've said that on this thread. Conclusion: we don't need better/more languages, we need better compilers.
We don't need better languages or more languages, we need better compilers and runtimes.
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C# !C# 
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Don't worry, you'll out grow that soon enough.
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Nah, I think I will retire before then. Pretty much been doing C# for the last ten years except for a brief stint of C++ for a year. I'm 64 and have a couple of years of work in front of me that I have to get done, and then I think I will fade away to the beach somewhere.
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Haven't given it much thought; the Home screen mentions shopping lists and such.
Been working on a project that references multiple pdfs; with tables referencing other tables and appendixes and procedure paragraphs. Mentally exhausting.
Started "snipping" everything using Snipping Tool; pasting it into OneNote however I wanted.
Access times reduced to a minimum; a new, more relaxing study experience.
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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