How iterate over CHashMap?

[ipsec]

I have populated HashMap with keys and values.

Now I need to iterate over all pair (key, values).

How to do this?

CHashMap don't have a method CHashMap.items().

Thanks.

[lippmaje]

I'd suggest to use CopyTo to copy the map content into an array. See CopyTo for IMap. https://www.mql5.com/en/docs/standardlibrary/generic/imap

Once you got the keys in your array you just loop over it.

int count=map.CopyTo(keys,values);

[Anthony Garot]

Another possibility is to use an array of objects instead of CHashMap. (per @nicholi shen)

https://www.mql5.com/en/forum/304122#comment_10707687

[nicholish en]

Anthony Garot:

Another possibility is to use an array of objects instead of CHashMap. (per @nicholi shen)

https://www.mql5.com/en/forum/304122#comment_10707687

Definitely this. I have found very little use for dictionaries in MQL, however, if you are using CHashMap and need iterate the items then use the CopyTo method.

   CHashMap<string, int> d;
   
   d.Add("one", 1);
   d.Add("two", 2);
   d.Add("three", 3);
   
   string keys[];
   int values[];
   d.CopyTo(keys, values);
   for (int i=0; i<d.Count(); i++)
      Print(keys[i], " ", values[i]);