Setting default value in Trove hash map

Question

How do I set the default value (returned when the key doesn't exist) for a TLongDoubleHashMap collection. It returns 0 by default, I would like it to return NaN.

I found this in the documentation:

Returns the value that will be returned from get(long) or put(long, double) if no entry exists for a given key. The default value is generally zero, but can be changed during construction of the collection.

But I have found no way to set the value during construction.

Link to quote: http://trove4j.sourceforge.net/javadocs/gnu/trove/map/TLongDoubleMap.html#getNoEntryValue() — Savage Reader, Sep 11 '14 at 16:26

score 2 · Accepted Answer · answered Sep 11 '14 at 16:23

2

By using this constructor:

public TLongDoubleHashMap(int initialCapacity,float loadFactor,long noEntryKey,double noEntryValue)

For example:

TLongDoubleHashMap map = new TLongDoubleHashMap(5, 0.5f, Double.NaN, Double.NaN)

answered Sep 11 '14 at 16:23

Xavier Delamotte

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Thank you. This wasn't in the documentation, but it is in the source code. I fixed the arguments in the answer as well. – Savage Reader Sep 11 '14 at 16:27
It is in the docs : http://trove4j.sourceforge.net/javadocs/gnu/trove/map/hash/TLongDoubleHashMap.html – David Limkys Sep 11 '14 at 16:31

Setting default value in Trove hash map

1 Answers1