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1 module dwt.dwthelper.WeakHashMap;
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2
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3
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4 /+
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5 Is not yet 'weak'
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6 +/
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7 class WeakHashMap {
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8
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9 static class Ref {
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10 size_t ptr;
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11 this(Object k){
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12 ptr = cast(size_t)cast(void*)k;
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13 }
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14 }
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15
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16 Object[ Ref ] data;
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17
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18 public void add (Object key, Object element){
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19 auto k = new Ref(key);
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20 data[ k ] = element;
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21 }
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22 public void removeKey (Object key){
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23 scope k = new Ref(key);
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24 data.remove( k );
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25 }
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26 public Object get(Object key){
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27 scope k = new Ref(key);
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28 if( auto p = k in data ){
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29 return *p;
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30 }
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31 return null;
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32 }
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33 }
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