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Spec fix (emptyCustomMemo)

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Dmitry Boulytchev 2020-11-16 16:20:19 +03:00
parent 8cddb126b9
commit 6822582552
2 changed files with 4 additions and 1 deletions
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spec/07.standard_library.tex
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@ -250,7 +250,10 @@ elements are enumerated in an ascending order.}
Memoization tables can be used for \emph{hash-consing}~\cite{hashConsing}~--- a data transformation which converts structurally equal
data structures into physically equal. Memoization tables are mutable; they do not work for cyclic data structures.
\descr{\lstinline|fun emptyMemo ()|}{Creates an empty memo table.}
\descr{\lstinline|fun emptyCustomMemo (p, c)|}{Creates an empty customized memo table; \lstinline|p| is a predicate to filter out certain data structures (returns true on
data structures which \emph{should not be} hash-consed; ``\lstinline|\{\}|'' can be specified for always false predicate); \lstinline|c| is a custom comparison function.}
\descr{\lstinline|fun emptyMemo ()|}{Creates an empty memo table. Equivalent to \lstinline|emptyCustomMemo (\{\}, compare)|.}
\descr{\lstinline|fun lookupMemo (m, v)|}{Lookups a value "\lstinline|v|" in a memo table "\lstinline|m|", performing hash-consing and
returning a hash-consed value.}