Nerdamer
Documentation Playground Showcase GitHub
DocumentationPlaygroundShowcaseGitHub
OverviewGetting startedChoosing how to use NerdamerMigrating from Nerdamer 1.xxReferences & citations
Expression syntaxFunction reference
Overview & referenceScripting examplesUser-defined functions
API overviewnerdamer APISettings & configurationText output & public helpersAPI examples
ArchitectureExpression modelParser internalsCodebase mapInternals inspectorHow to developCode conventions
API/nerdamer API
Function

nerdamer.uUnSub

src/index.ts:1025
nerdamer.uUnSub(expression: Expression, map: SubstitutionMap): Expression

Restores substitutions produced by uSub.

Parameters

NameTypeDescription
expressionExpressionExpression containing generated substitution symbols.
mapSubstitutionMapMap returned by one or more u-substitution calls.

Returns

Expression — The expression after restoring every mapped value.

Nerdamer

Symbolic mathematics for JavaScript and TypeScript.

DocumentationNerdamer NotationNerdamer Scriptingnerdamer APIJavaScript / TypeScript API
ProjectPlaygroundReferences & citationsInternalsGitHub
Copyright © 2013–2026 Martin Donk · Licensed under the Apache License 2.0