Re: What is the closest to ConcurrentHashMap and NavigableMap in Java?

[ilya-stromberg]

On Thursday, 14 November 2013 at 21:16:15 UTC, TheFlyingFiddle 
wrote:

If that is the case are you not limited in the way you can 
update the map eg only in a single block?

Yes, it's probably not the best example. It's valid if you have 
only 1 synchronized block for map. But you can use something like 
this:

void bar()
{
   synchronized(map)
   {
     map[1] = 1;
   }

   synchronized(map)
   {
     map[2] = 2;
   }
}

Or this:

//Note: valid only if you have 1 function that use map
synchronized void bar()
{
     map[1] = 1;

     map[2] = 2;
}

Or this:

shared myMap;

synchronized class MyMap
{
   HashMap!(int, int) map;

   void foo()
   {
      map[1] = 1;
   }

   void bar()
   {
      map[2] = 2;
   }
}

//init map
shared static this()
{
   myMap = new MyMap();
}

Probably, it's the best example.