Forth (programming language): Difference between revisions

Revision as of 23:28, 23 March 2024

Revision as of 10:34, 12 April 2024

Line 2:

{{Redirect|FORTH||Forth (disambiguation)}}

{{Infobox programming language

| name = Forth

| paradigm = [[Concatenative programming language|concatenative]] [[Stack-oriented programming|stack-based]], [[Procedural programming|procedural]], [[ReflectionReflective (computer science)programming|reflective]]

| year = {{start date and age|1970}}

| designer = [[Charles H. Moore]]

| typing = Typeless

| implementations = SwiftForth (Forth, Inc.)<br/>[[Gforth]] (GNU Project)<br/>VFX Forth (MicroProcessor Engineering)

| influenced = [[Bitcoin#Transactions|Bitcoin Script]], [[Factor (programming language)|Factor]], [[Joy (programming language)|Joy]], [[RPL (programming language)|RPL]], [[REBOLRebol]], [[STOIC]]

| file_ext = .fs, .fth, .4th, .f, .forth{{cn|date=April 2022}}

| website = {{urlURL|https://forth-standard.org}}

}}

'''Forth''' is a [[Procedural programming|procedural]], [[Concatenative programming language|concatenative]], [[Stack-oriented programming|stack-oriented]] [[programming language]] and interactive [[Integrated development environment|interactiveintegrated development environment]] designed by [[Charles H. Moore|Charles H. "Chuck" Moore]] and first used by other programmers in 1970. Although not an [[acronym]], the language's name in its early years was often spelled in [[all capital letters]] as ''FORTH''. The FORTH-79 and FORTH-83 implementations, which were not written by Moore, became ''[[de facto]]'' standards, and an official standardization[[technical standard]] of the language was published in 1994 as ANS Forth. A wide range of Forth derivatives existed before and after ANS Forth. The [[free and open-source software]] [[Gforth]] implementation is actively maintained, as are several [[Commercial software|commercially]] supported systems.

Forth typically combines a compiler with an integrated command shell,{{efn|There are exceptions, such as Ulrich Hoffmann's preForth [http://www.euroforth.org/ef18/papers/hoffmann-slides.pdf][http://www.euroforth.org/ef18/papers/hoffmann.pdf] and Tom Zimmer's TCOM}} where the user interacts via [[subroutine]]s called ''words''. Words can be defined, tested, redefined, and debugged without recompiling or restarting the whole program. All syntactic elements, including variables, operators, and control flow, are defined as words. A [[stack (abstract data type)|stack]] is used to pass parameters between words, leading to a [[Reverse Polish Notation]] style.

Line 309:

== Notes ==

{{notelistNotelist}}

== References ==

{{reflistReflist}}

== External links ==