RPL programming language

E232847

Lisp-like language programming language reverse Polish notation language stack-based programming language

RPL is a stack-based, reverse Polish Lisp-like programming language developed by Hewlett-Packard for its graphing calculators, combining features of RPN and structured programming.

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All labels observed (2)

Label	Occurrences
RPL programming language canonical	1
System RPL	1

How this entity was disambiguated

This entity first appeared as the object of triple T2074901 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: RPL programming language
Context triple: [HP-48G, hasFeature, RPL programming language]

A. Vale programming language
Vale is a memory-safe, performance-focused systems programming language that explores region-based memory management and borrow-checking concepts similar to those in Rust.
B. Algol 68R
Algol 68R is a revised, more practical and implementable version of the Algol 68 programming language, created to simplify and clarify the original language’s complex design.
C. NXC (Not eXactly C)
NXC (Not eXactly C) is a C-like high-level programming language designed for developing programs for LEGO Mindstorms NXT robots.
D. Ada (programming language)
Ada is a statically typed, high-level programming language designed with strong support for reliability, safety, and real-time systems, widely used in mission-critical and embedded applications such as aerospace and defense.
E. Simula
Simula is an early high-level programming language from the 1960s that pioneered object-oriented programming concepts such as classes and objects.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: RPL programming language
Target entity description: RPL is a stack-based, reverse Polish Lisp-like programming language developed by Hewlett-Packard for its graphing calculators, combining features of RPN and structured programming.

A. Vale programming language
Vale is a memory-safe, performance-focused systems programming language that explores region-based memory management and borrow-checking concepts similar to those in Rust.
B. Algol 68R
Algol 68R is a revised, more practical and implementable version of the Algol 68 programming language, created to simplify and clarify the original language’s complex design.
C. NXC (Not eXactly C)
NXC (Not eXactly C) is a C-like high-level programming language designed for developing programs for LEGO Mindstorms NXT robots.
D. Ada (programming language)
Ada is a statically typed, high-level programming language designed with strong support for reliability, safety, and real-time systems, widely used in mission-critical and embedded applications such as aerospace and defense.
E. Simula
Simula is an early high-level programming language from the 1960s that pioneered object-oriented programming concepts such as classes and objects.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	Lisp-like language ⓘ programming language ⓘ reverse Polish notation language ⓘ stack-based programming language ⓘ
computationalModel	stack-based ⓘ
dataStructure	stack ⓘ
designedFor	Hewlett-Packard calculators ⓘ graphing calculators ⓘ
developer	Hewlett-Packard ⓘ
executionModel	direct interpretation from stack ⓘ
hasFeature	algebraic objects ⓘ arrays ⓘ dynamic typing ⓘ exception handling ⓘ first-class objects ⓘ garbage collection ⓘ lists ⓘ local variables ⓘ structured control constructs ⓘ symbolic objects ⓘ user-defined data types ⓘ user-defined functions ⓘ
hasVariant	System RPL ⓘ linked to: RPL programming language User RPL ⓘ
influencedBy	Forth ⓘ Lisp ⓘ linked to: Lisp programming language RPN (reverse Polish notation) ⓘ linked to: RPN
paradigm	concatenative programming ⓘ procedural programming ⓘ structured programming ⓘ
supports	compiled programs ⓘ interactive programming ⓘ
supportsDataType	algebraic expressions ⓘ arrays ⓘ complex numbers ⓘ lists ⓘ program objects ⓘ real numbers ⓘ strings ⓘ symbolic variables ⓘ
supportsNotation	reverse Polish notation ⓘ
targetPlatform	HP Saturn architecture calculators ⓘ
typicalUse	educational use on calculators ⓘ engineering applications ⓘ mathematical computation ⓘ
usedInDevice	HP-28 series calculators ⓘ linked to: HP calculators HP-48 series calculators ⓘ linked to: HP calculators HP-49 series calculators ⓘ linked to: HP calculators HP-50g calculator ⓘ linked to: HP calculators

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

HP-48G → hasFeature → RPL programming language ⓘ

subject linked to: HP calculators

RPL programming language → hasVariant → System RPL ⓘ

linked to: RPL programming language

All labels observed (2)

How this entity was disambiguated Show

Statements (49)

How these facts were elicited Show

Referenced by (2)

How this entity was disambiguated

How these facts were elicited