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document 2cache

db4
Doug Coleman 2009-05-25 11:03:40 -05:00
parent 5a3a14d1c9
commit e38e85ce5e
1 changed files with 14 additions and 1 deletions
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15
core/assocs/assocs-docs.factor
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@ -121,6 +121,7 @@ $nl
"Additional combinators:"
{ $subsection assoc-partition }
{ $subsection cache }
{ $subsection 2cache }
{ $subsection map>assoc }
{ $subsection assoc>map }
{ $subsection assoc-map-as } ;
@ -237,6 +238,13 @@ HELP: assoc-filter-as
{ assoc-filter assoc-filter-as } related-words
HELP: assoc-partition
{ $values
{ "assoc" assoc } { "quot" quotation }
{ "true-assoc" assoc } { "false-assoc" assoc }
}
{ $description "Calls a predicate quotation on each key of the input assoc. If the test yields true, the key/value pair is added to " { $snippet "true-assoc" } "; if false, it's added to " { $snippet "false-assoc" } "." } ;
HELP: assoc-any?
{ $values { "assoc" assoc } { "quot" { $quotation "( key value -- ? )" } } { "?" "a boolean" } }
{ $description "Tests if the assoc contains an entry satisfying a predicate by applying the quotation to each entry in turn. Iteration stops if an entry is found for which the quotation outputs a true value." } ;
@ -332,7 +340,12 @@ HELP: substitute
HELP: cache
{ $values { "key" "a key" } { "assoc" assoc } { "quot" { $quotation "( key -- value )" } } { "value" "a previously-retained or freshly-computed value" } }
{ $description "If the key is present in the assoc, outputs the associated value, otherwise calls the quotation to produce a value and stores the key/value pair into the assoc." }
{ $description "If the key is present in the assoc, outputs the associated value, otherwise calls the quotation to produce a value and stores the key/value pair into the assoc. Returns a value either looked up or newly stored in the assoc." }
{ $side-effects "assoc" } ;
HELP: 2cache
{ $values { "key1" "a key" } { "key2" "a key" } { "assoc" assoc } { "quot" { $quotation "( key -- value )" } } { "value" "a previously-retained or freshly-computed value" } }
{ $description "If a single key composed of the input keys is present in the assoc, outputs the associated value, otherwise calls the quotation to produce a value and stores the keys/value pair into the assoc. Returns the value stored in the assoc. Returns a value either looked up or newly stored in the assoc." }
{ $side-effects "assoc" } ;
HELP: map>assoc