76 lines
1.1 KiB
Text
76 lines
1.1 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{Order}
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an order of elements with a numerical index@section{related}
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Classes/SparseArray
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@section{categories}
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Collections>Ordered
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@section{description}
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Keeps elements in an order and allows to put them at arbitrary slots
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without having to allocate a large array.
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@section{note}
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link::#-put:: and link::#-at:: are slower than in link::Classes/IdentityDictionary:: / link::Classes/PriorityQueue::, link::#-do:: is faster.
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::
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@section{CLASSMETHODS}
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@section{method}
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new
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Create a new order.
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@racketblock[
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g = Order.new;
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g.put(7, 100); // put a value (100) at index 7
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g.clear; // empty
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::
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]
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@section{method}
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newFromIndices
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Create a new order from given items and indices.
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@section{INSTANCEMETHODS}
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@section{private}
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resetIndices, nextSlotFor, slotFor, prPutSlot
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@section{method}
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doRange
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Iterate over a range of the order's items.
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@section{method}
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pos
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Return the current write position.
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@section{EXAMPLES}
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@racketblock[
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a = Order.new;
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a[0] = \z;
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a[0] = \y;
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a[5] = \five;
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a[4] = \four;
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a[0] = \z;
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a[5] = \five;
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a[4] = \four;
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a.indices;
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a[9] = 100;
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a.indices;
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::
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]
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