Smalltalk - Programming language

Smalltalk is a programming language created in 1972 by Alan Kay and Dan Ingalls and Adele Goldberg.

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Smalltalk is an object-oriented, dynamically typed, reflective programming language. Smalltalk was created as the language to underpin the "new world" of computing exemplified by "human–computer symbiosis." It was designed and created in part for educational use, more so for constructionist learning, at the Learning Research Group (LRG) of Xerox PARC by Alan Kay, Dan Ingalls, Adele Goldberg, Ted Kaehler, Scott Wallace, and others during the 1970s. The language was first generally released as Smalltalk-80. Read more on Wikipedia...

Smalltalk Wikipedia page
Smalltalk docs
There are at least 9,336 Smalltalk repos on GitHub
file extensions for Smalltalk include st and cs
The Google BigQuery Public Dataset GitHub snapshot shows 5k users using Smalltalk in 6k repos on GitHub
There are 111 Project Euler users using Smalltalk
Explore Smalltalk snippets on Rosetta Code
Smalltalk on HOPL
Smalltalk appears in the TIOBE Index
Smalltalk Ubuntu package
ANTLR grammar for Smalltalk
CodeMirror package for syntax highlighting Smalltalk
Pygments supports syntax highlighting for Smalltalk
GitHub supports syntax highlighting for Smalltalk
Smalltalk appears in the Quine Relay project
There is a central package repository for Smalltalk
See also: (42 related languages)Pharo, Squeak, VisualWorks, Lisp, Simula, Euler, IMP, PLANNER, Logo, Applescript, Dart, Dylan, Erlang, Etoys, Falcon, Go, Groovy, Io, Ioke, Java, Lasso, Lisaac, NewtonScript, Object Rexx, Objective-C, PHP, Perl 6, Python, Ruby, Scala, Scratch, Self, SQL, Flavors, CLOS, Prolog, ASCII, JavaScript, Visual Smalltalk Enterprise, Smalltalk MT, JVM, Strongtalk

Example from Riju:

'Hello, world!' displayNl !

Example from hello-world:

Transcript show: 'Hello World'.

Example from Linguist:

ChartJs
dataFunction
	^ 'bars'

Example from Wikipedia:

quadMultiply: i1 and: i2
    "This method multiplies the given numbers by each other and the result by 4."
    | mul |
    mul := i1 * i2.
    ^mul * 4