Thread by @xah_lee

learn How Compiler Works in 20 minutes xahlee.info/parser/compile…

What's the Difference Between BNF, EBNF, ABNF?
xahlee.info/parser/bnf_ebn…
#golang #haskell #lisp #python

this, still the best book on writing a compiler. Though, not as clear and broad as i thought.
there are thievery pdf versions online, but all code/formula are screwed. You better buy the real thing.
Dragon Book Table of Contents
xahlee.info/parser/dragon_…

Object Oriented Programing's Jargons and Complexities
xahlee.info/comp/oop.html
#java #python #ruby

Meaning of “Object” in Computer Languages
xahlee.info/comp/meaning_o…
#java #lisp #python #JavaScript #c

Object Oriented Programing: is Object Data or Namespace?
xahlee.info/comp/oop_is_ob…
#JavaScript

Unix Pipe as Functional Language
xahlee.info/comp/unix_pipe…

learn svn in 10 minutes. Yes, some people are still using it.
xahlee.info/UnixResource_d…

Learn #Ruby in 1 Hour xahlee.info/ruby/ruby_basi…

Learn #Python in 1 Hour xahlee.info/python/python_…

learn #golang in 1 hour xahlee.info/golang/golang_…

#JavaScript Tab vs Space in Source Code. new comment
xahlee.info/UnixResource_d…
#python #ruby #haskell #unix

Programing Language: Polymorphism, Dispatch, and the Tale of Poly-Tinting
xahlee.info/comp/programin…
#python #clojure #haskell #ruby

Technical Writing as Symbolic Logic: #clojure Intern Symbol
xahlee.info/comp/clojure_t…
#haskell

#python #haskell
List Comprehension is a little language. It's an EXCEPTION in SYNTAX and SEMANTICS. Like, YE WHO ENTER HERE, ALL RULES DON'T APPLY!

Why is List Comprehension Bad?
xahlee.info/comp/list_comp…

A Lambda Logo Tour (and why #LISP languages using λ as logo should not be looked upon kindly)
xahlee.info/UnixResource_d…
#haskell #ocaml
@racketlang

note, λ is lost to the millennials.
New fp langs don't have λ as logo nor function name. e.g.
#purescript @reasonml @elmlang

“remove is identical to install except that packages are removed instead of installed.”

doc by dummies, Technical writing at its worst
xahlee.info/comp/comp_lang…
#python #perl #haskell #clojure #emacs

Why I Hate Exceptions
xahlee.info/comp/why_i_hat…
#golang #clojure #haskll #python #JavaScript

Iterator, Enumerator = Abstraction Went Wrong
xahlee.info/comp/iterator_…
#java #python #clojure

Ontology of Programing Language
xahlee.info/comp/programin…
#haskell #ocaml #lisp #python #ruby

Should Array Index Start at 0 or 1?
xahlee.info/comp/comp_lang…

#python #ruby #java #lisp #javascript
#FORTRAN #MATLAB #Julia #Mathematica #Smalltalk #Lua #Erlang #APL.

Famous Programers on How Common #Lisp Sucks
xahlee.info/comp/Common_Li…

Jargons of Software Industry xahlee.info/comp/comp_jarg…

in most langs，import/export r about names (aka identifiers，symbols)。In #JS es2015，it's values ＆ is extremely complex。① context dependent ad hoc syntax。those statements r a lil' lang by themselfs ② huge amount of syntactic variations. ③ mix concept of value/name/namespac

understand of #clojure Magic Characters ' \ @ ^ # ` ~ .
xahlee.info/clojure/clojur…

why isn't #lisp in today's artificial intelligence scene
reddit.com/r/emacs/commen…
#python #ruby #javascript

Patterns mean “I have run out of language.” — #clojure inventor Rich Hickey
Learn Clojure in 1 hour xahlee.info/clojure/clojur…

ban code elegance.
Xah Programing Blog
xahlee.info/comp/blog.html
#clojure #haskell #lisp #python

generative art = piss splash updated with programing.
here's history of processing, the generative art programing language for non-programers. Non-programers? lol, actually, it's java.
maxoffsky.com/research/resea…

Xah On Lisp, new index xahlee.info/comp/lisp_inde…

Formal Definition of Systematic Grammar
xahlee.info/comp/formal_de…
#lisp #haskell #python

Fundamental Problems of Lisp
xahlee.info/UnixResource_d…

ok, some perl posts are in order.
Learn Perl in 1 Hour
xahlee.info/perl/perl_basi…

Perl Books Survey 2002
xahlee.info/UnixResource_d…

#humor Perl Documentation: the Key to Perl.
xahlee.info/python/key_to_…

Perl Folks Try to Erase History!
xahlee.info/comp/perl_dele…

Laziness, Perl, and Larry Wall
xahlee.info/UnixResource_d…

#JavaScript this is what coding DOM is like.
DOM = ass pain.
2 major problems: ① your code logic must flow in reverse direction, block by block. ② lots embeded "string", it's like coding inside string.

you wonder why DOM's like that. ① utter incompetence? ② historical bagage? From my 20 years of observation of industry, i think it's enterprise induced total incompetence. Other examples are unix+c of 1980s, C++, and whole Java thing starting from 1995.

does any know a js/dom framework that's based on nested list/object to represent dom tree?

collection of Programing Problems
xahlee.info/comp/programin…
use your fav lang, js python ruby golang haskell

learn #Java in a day xahlee.info/java-a-day/jav…

#d3js Visualization, a Quasi Science.
xahlee.info/comp/d3_visual…
first draft. expanded from morning's tweets.
#JavaScript

JAPAN TRON Operating System, TRON Encoding
xahlee.info/comp/TRON_oper…

Variable Naming: English Words Considered Harmful
xahlee.info/comp/programin…

Sigil for Function Parameter Names
xahlee.info/comp/sigil_for…

The Sigils WAR, Language Design and Coding Convention
ergoemacs.org/misc/an_eulogy…

#haskell #ruby #clojure #lisp

some of their proposal is impossile to do in python, e.g. ♥ = 4
#Python Unicode Tutorial 🐍
xahlee.info/python/unicode…