diff options
Diffstat (limited to 'src/algebra/coerce.spad.pamphlet')
| -rw-r--r-- | src/algebra/coerce.spad.pamphlet | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/algebra/coerce.spad.pamphlet b/src/algebra/coerce.spad.pamphlet index 3ad352b6..f270bba6 100644 --- a/src/algebra/coerce.spad.pamphlet +++ b/src/algebra/coerce.spad.pamphlet @@ -2,7 +2,7 @@ \usepackage{axiom} \begin{document} \title{\$SPAD/src/algebra coerce.spad} -\author{Richard Jenks, Manuel Bronstein} +\author{Richard Jenks, Manuel Bronstein, Gabriel Dos Reis} \maketitle \begin{abstract} \end{abstract} @@ -20,6 +20,24 @@ Type(): Category == with nil @ + + +\section{Category UnionType} + +<<category UTYPE UnionType>>= +)abbrev category UTYPE UnionType +++ Author: Gabriel Dos Reis +++ Date Created: December 17, 2007 +++ Date Last Modified: December 17, 2007 +++ Description: The category of domains that act like unions. +++ UnionType, like Type or Category, acts mostly as a take that +++ communicates `union-like' intended semantics to the compiler. +++ A domain D that satifies UnionType should provide definitions +++ for `case' operators, with corresponding `autoCoerce' operators. +UnionType(): Category == with nil +@ + + \section{category KOERCE CoercibleTo} <<category KOERCE CoercibleTo>>= )abbrev category KOERCE CoercibleTo @@ -114,6 +132,7 @@ RetractableTo(S: Type): Category == with <<license>> <<category TYPE Type>> +<<category UTYPE UnionType>> <<category KOERCE CoercibleTo>> <<category KONVERT ConvertibleTo>> <<category RETRACT RetractableTo>> |