39 lines
835 B
Text
39 lines
835 B
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{TwoWayIdentityDictionary}
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associative collection mapping keys to values and back@section{related}
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Classes/IdentityDictionary
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@section{categories}
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Collections>Unordered
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@section{description}
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Similar to link::Classes/IdentityDictionary::, but allows to go efficiently from element to key and back. The contents of a TwoWayIdentityDictionary are strong::unordered::. You must not depend on the order of items.
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@section{INSTANCEMETHODS}
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@section{private}
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init
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@section{method}
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getID
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Find the key for a given object. If object is not element of the dictionary, it returns nil.
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@section{EXAMPLES}
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@racketblock[
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a = TwoWayIdentityDictionary.new;
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a.put(\test, 999);
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a.put(["some", "strings"], 1200);
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a.at(\test);
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a.getID(999);
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a.getID(1200);
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a.getID(888); // nil
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]
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