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growable: improve docs for ensure.

db4
John Benediktsson 2014-01-08 11:44:12 -08:00
parent a96efb16c2
commit d3be4c0e1f
1 changed files with 4 additions and 4 deletions
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core/growable/growable-docs.factor
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@ -27,12 +27,12 @@ HELP: new-size
{ $description "Computes the new size of a resizable sequence." } ; { $description "Computes the new size of a resizable sequence." } ;
HELP: ensure HELP: ensure
{ $values { "n" "a positive integer" } { "seq" growable } } { $values { "n" "a non-negative integer" } { "seq" growable } }
{ $description "This word behaves as follows, depending on the relation between " { $snippet "n" } " and the length of the sequence:" { $description "Ensures that " { $snippet "seq" } " has sufficient capacity to store an " { $snippet "n" } "th element." $nl "This word behaves as follows, depending on the relation between " { $snippet "n" } ", the capacity of the underlying storage, and the length of the sequence:"
{ $list { $list
{ "If " { $snippet "n" } " is less than the length of the sequence, does nothing." } { "If " { $snippet "n" } " is less than the length of the sequence, does nothing." }
{ "If " { $snippet "n" } " exceeds the capacity of the underlying storage, the underlying storage is grown." } { "If " { $snippet "n" } " is greater than or equal to the capacity of the underlying storage, the underlying storage is grown." }
{ "If " { $snippet "n" } " is greater than or equal to the length but less than the capacity of the underlying storage, the fill pointer is moved and nothing else is done." } { "If " { $snippet "n" } " is greater than or equal to the length, the length is increased." }
} }
"In the case that new elements are added to the sequence (last two cases), the new elements are undefined." } "In the case that new elements are added to the sequence (last two cases), the new elements are undefined." }
{ $notes "This word is used in the implementation of the " { $link set-nth } " generic for sequences supporting the resizable sequence protocol (see " { $link "growable" } ")." { $notes "This word is used in the implementation of the " { $link set-nth } " generic for sequences supporting the resizable sequence protocol (see " { $link "growable" } ")."