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added clarification to the docs about caching

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svn: r13003
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Robby Findler 2009-01-04 18:10:32 +00:00
parent 9b84def3c1
commit 206553c816
1 changed files with 6 additions and 2 deletions
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8
collects/redex/redex.scrbl
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@ -79,8 +79,12 @@ All of the exports in this section are provided both by
all non-GUI portions of Redex) and also exported by
@schememodname[redex] (which includes all of Redex).
This section covers Redex's @deftech{pattern} language, used
in various ways:
This section covers Redex's @deftech{pattern} language, used in many
of Redex's forms.
Note that pattern matching is caching (including caching the results
of side-conditions). This means that once a pattern has matched a
given term, Redex assumes that it will always match that term.
@(schemegrammar* #:literals (any number string variable variable-except variable-prefix variable-not-otherwise-mentioned hole name in-hole side-condition cross)
[pattern any