The short answer is to say, this is open source, so look at the source ;-)
The longer answer is that MultiKeyMap uses specially optimised data
structures internally to store the key parts. This avoids any hacky (and
slow) string concatenation. Given a choice, I would always use a
MultiKeyMap for a multiply-keyed map.
Stephen
Mark Shifman wrote:
Hi:
If I am building a map with a compound key composed of say 3 strings ,
is there any advantage to using MultiKeyMap over a regular Hash(ed)Map
with the key = key1+"_"+key2+"_"+key3;
speed?..elegance??
thanks in advance
mas
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