Merging 2 dictionaries having duplicate keys with linq





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12















How to merge 2 dictionaries of IDictionary<Guid, MyObject> where MyObject is a class instance?



IDictionary<Guid, MyObject> d1 = new Dictionary<Guid, MyObject>();
d1.Add(guid1, m1);
d1.Add(guid2, m2);
d1.Add(guid3, m3);
IDictionary<Guid, MyObject> d2 = new Dictionary<Guid, MyObject>();
d2.Add(guid2, m2);
d2.Add(guid3, m3);
d2.Add(guid4, m4);
IDictionary<Guid, MyObject> d3 = d1.Union(d2) ???


That in d3 there are the following entries:



guid1,m1
guid2,m2
guid3,m3
guid4,m4









share|improve this question

























  • duplicate of stackoverflow.com/questions/294138/merging-dictionaries-in-c

    – hatchet
    Aug 1 '11 at 19:22











  • sorry, I could not find my solutiion there

    – Chesnokov Yuriy
    Aug 1 '11 at 19:43











  • possible duplicate of Combine two Dictionaries with linq; more exact duplicate than the other one

    – Mechanical snail
    Nov 21 '12 at 6:31




















12















How to merge 2 dictionaries of IDictionary<Guid, MyObject> where MyObject is a class instance?



IDictionary<Guid, MyObject> d1 = new Dictionary<Guid, MyObject>();
d1.Add(guid1, m1);
d1.Add(guid2, m2);
d1.Add(guid3, m3);
IDictionary<Guid, MyObject> d2 = new Dictionary<Guid, MyObject>();
d2.Add(guid2, m2);
d2.Add(guid3, m3);
d2.Add(guid4, m4);
IDictionary<Guid, MyObject> d3 = d1.Union(d2) ???


That in d3 there are the following entries:



guid1,m1
guid2,m2
guid3,m3
guid4,m4









share|improve this question

























  • duplicate of stackoverflow.com/questions/294138/merging-dictionaries-in-c

    – hatchet
    Aug 1 '11 at 19:22











  • sorry, I could not find my solutiion there

    – Chesnokov Yuriy
    Aug 1 '11 at 19:43











  • possible duplicate of Combine two Dictionaries with linq; more exact duplicate than the other one

    – Mechanical snail
    Nov 21 '12 at 6:31
















12












12








12


2






How to merge 2 dictionaries of IDictionary<Guid, MyObject> where MyObject is a class instance?



IDictionary<Guid, MyObject> d1 = new Dictionary<Guid, MyObject>();
d1.Add(guid1, m1);
d1.Add(guid2, m2);
d1.Add(guid3, m3);
IDictionary<Guid, MyObject> d2 = new Dictionary<Guid, MyObject>();
d2.Add(guid2, m2);
d2.Add(guid3, m3);
d2.Add(guid4, m4);
IDictionary<Guid, MyObject> d3 = d1.Union(d2) ???


That in d3 there are the following entries:



guid1,m1
guid2,m2
guid3,m3
guid4,m4









share|improve this question
















How to merge 2 dictionaries of IDictionary<Guid, MyObject> where MyObject is a class instance?



IDictionary<Guid, MyObject> d1 = new Dictionary<Guid, MyObject>();
d1.Add(guid1, m1);
d1.Add(guid2, m2);
d1.Add(guid3, m3);
IDictionary<Guid, MyObject> d2 = new Dictionary<Guid, MyObject>();
d2.Add(guid2, m2);
d2.Add(guid3, m3);
d2.Add(guid4, m4);
IDictionary<Guid, MyObject> d3 = d1.Union(d2) ???


That in d3 there are the following entries:



guid1,m1
guid2,m2
guid3,m3
guid4,m4






c# linq dictionary merge






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 21 '12 at 6:30









Mechanical snail

19.9k1074100




19.9k1074100










asked Aug 1 '11 at 19:13









Chesnokov YuriyChesnokov Yuriy

75531529




75531529













  • duplicate of stackoverflow.com/questions/294138/merging-dictionaries-in-c

    – hatchet
    Aug 1 '11 at 19:22











  • sorry, I could not find my solutiion there

    – Chesnokov Yuriy
    Aug 1 '11 at 19:43











  • possible duplicate of Combine two Dictionaries with linq; more exact duplicate than the other one

    – Mechanical snail
    Nov 21 '12 at 6:31





















  • duplicate of stackoverflow.com/questions/294138/merging-dictionaries-in-c

    – hatchet
    Aug 1 '11 at 19:22











  • sorry, I could not find my solutiion there

    – Chesnokov Yuriy
    Aug 1 '11 at 19:43











  • possible duplicate of Combine two Dictionaries with linq; more exact duplicate than the other one

    – Mechanical snail
    Nov 21 '12 at 6:31



















duplicate of stackoverflow.com/questions/294138/merging-dictionaries-in-c

– hatchet
Aug 1 '11 at 19:22





duplicate of stackoverflow.com/questions/294138/merging-dictionaries-in-c

– hatchet
Aug 1 '11 at 19:22













sorry, I could not find my solutiion there

– Chesnokov Yuriy
Aug 1 '11 at 19:43





sorry, I could not find my solutiion there

– Chesnokov Yuriy
Aug 1 '11 at 19:43













possible duplicate of Combine two Dictionaries with linq; more exact duplicate than the other one

– Mechanical snail
Nov 21 '12 at 6:31







possible duplicate of Combine two Dictionaries with linq; more exact duplicate than the other one

– Mechanical snail
Nov 21 '12 at 6:31














5 Answers
5






active

oldest

votes


















14














d1.Concat(d2.Where( x=> !d1.Keys.Contains(x.Key)));





share|improve this answer





















  • 1





    thank you very much, that is the correct approach though leading processing of the concatenated set

    – Chesnokov Yuriy
    Aug 1 '11 at 19:37













  • @Eric This looks like a good solution. But, if I have IEnuemrable<Dictionary<Guid, MyObject>> colection, how can I match items?

    – barteloma
    Aug 17 '17 at 13:10



















5














d1.Union(d2).GroupBy (kvp => kvp.Key).ToDictionary(kvp => kvp.Key, kvp => kvp.First().Value); out to do the trick.



IDictionary<Guid, MyObject> d1 = new Dictionary<Guid, MyObject>();
d1.Add(guid1, m1);
d1.Add(guid2, m2);
d1.Add(guid3, m3);
IDictionary<Guid, MyObject> d2 = new Dictionary<Guid, MyObject>();
d2.Add(guid2, m2);
d2.Add(guid3, m3);
d2.Add(guid4, m4);
IDictionary<Guid, MyObject> d3 =
d1.Union(d2).GroupBy (kvp => kvp.Key)
.ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value);





share|improve this answer


























  • thanks but I tried that and Union leads to Exception with 'An item with the same key has already been added'

    – Chesnokov Yuriy
    Aug 1 '11 at 19:32











  • I fixed it. ` IDictionary<Guid, MyObject> d3 = d1.Union(d2).GroupBy (kvp => kvp.Key) .ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value); `

    – agent-j
    Aug 1 '11 at 22:20











  • thank you very much, that works, how that line avoids duplicate keys? is that faster than d1.Concat(d2.Where(x => !d1.Keys.Contains(x.Key)))?

    – Chesnokov Yuriy
    Aug 2 '11 at 5:27











  • I tested that using Stopwatch, using of Concat is 3 time faster, SO DO NOT USE Union

    – NET3
    Nov 22 '12 at 23:00






  • 1





    Much more readable than accepted answer.

    – nawfal
    May 26 '16 at 12:40



















0














You could try something like



d1.Concat(d2).Distinct(kv => kv.Key).ToDictionary(kv => kv.Key, kv => kv.Value)


The result of concat makes use of the fact that the dictionary is an IEnumerable<KeyvaluePair<Guid,MyObject>>



Since I do not have a compiler I just checked that Distinct cannot accept just a lambda selecting the property to be compared. However it can accept an EqualityComparer. What I often have in projects is a Generic Equality Comparer that allows to pass in lambdas which define the equality operation.






share|improve this answer
























  • yes, equality comparer is needed

    – Chesnokov Yuriy
    Aug 1 '11 at 19:39



















0














When no duplicates keys exist, the following works for 2 (or more) dictionaries:



var dictionaries = new  { d1, d2 };
var result = dictionaries.SelectMany(dict => dict)
.ToDictionary(pair => pair.Key, pair => pair.Value);





share|improve this answer



















  • 1





    ok, there are duplicates present

    – Chesnokov Yuriy
    Aug 1 '11 at 19:40



















0














Union looks good:
http://msdn.microsoft.com/en-us/vcsharp/aa336761.aspx#union1






share|improve this answer
























  • that does not work well with class instance in the value

    – Chesnokov Yuriy
    Aug 1 '11 at 19:35












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5 Answers
5






active

oldest

votes








5 Answers
5






active

oldest

votes









active

oldest

votes






active

oldest

votes









14














d1.Concat(d2.Where( x=> !d1.Keys.Contains(x.Key)));





share|improve this answer





















  • 1





    thank you very much, that is the correct approach though leading processing of the concatenated set

    – Chesnokov Yuriy
    Aug 1 '11 at 19:37













  • @Eric This looks like a good solution. But, if I have IEnuemrable<Dictionary<Guid, MyObject>> colection, how can I match items?

    – barteloma
    Aug 17 '17 at 13:10
















14














d1.Concat(d2.Where( x=> !d1.Keys.Contains(x.Key)));





share|improve this answer





















  • 1





    thank you very much, that is the correct approach though leading processing of the concatenated set

    – Chesnokov Yuriy
    Aug 1 '11 at 19:37













  • @Eric This looks like a good solution. But, if I have IEnuemrable<Dictionary<Guid, MyObject>> colection, how can I match items?

    – barteloma
    Aug 17 '17 at 13:10














14












14








14







d1.Concat(d2.Where( x=> !d1.Keys.Contains(x.Key)));





share|improve this answer















d1.Concat(d2.Where( x=> !d1.Keys.Contains(x.Key)));






share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 16 '18 at 13:42









croxy

2,95072039




2,95072039










answered Aug 1 '11 at 19:20









Eric HEric H

1,2811814




1,2811814








  • 1





    thank you very much, that is the correct approach though leading processing of the concatenated set

    – Chesnokov Yuriy
    Aug 1 '11 at 19:37













  • @Eric This looks like a good solution. But, if I have IEnuemrable<Dictionary<Guid, MyObject>> colection, how can I match items?

    – barteloma
    Aug 17 '17 at 13:10














  • 1





    thank you very much, that is the correct approach though leading processing of the concatenated set

    – Chesnokov Yuriy
    Aug 1 '11 at 19:37













  • @Eric This looks like a good solution. But, if I have IEnuemrable<Dictionary<Guid, MyObject>> colection, how can I match items?

    – barteloma
    Aug 17 '17 at 13:10








1




1





thank you very much, that is the correct approach though leading processing of the concatenated set

– Chesnokov Yuriy
Aug 1 '11 at 19:37







thank you very much, that is the correct approach though leading processing of the concatenated set

– Chesnokov Yuriy
Aug 1 '11 at 19:37















@Eric This looks like a good solution. But, if I have IEnuemrable<Dictionary<Guid, MyObject>> colection, how can I match items?

– barteloma
Aug 17 '17 at 13:10





@Eric This looks like a good solution. But, if I have IEnuemrable<Dictionary<Guid, MyObject>> colection, how can I match items?

– barteloma
Aug 17 '17 at 13:10













5














d1.Union(d2).GroupBy (kvp => kvp.Key).ToDictionary(kvp => kvp.Key, kvp => kvp.First().Value); out to do the trick.



IDictionary<Guid, MyObject> d1 = new Dictionary<Guid, MyObject>();
d1.Add(guid1, m1);
d1.Add(guid2, m2);
d1.Add(guid3, m3);
IDictionary<Guid, MyObject> d2 = new Dictionary<Guid, MyObject>();
d2.Add(guid2, m2);
d2.Add(guid3, m3);
d2.Add(guid4, m4);
IDictionary<Guid, MyObject> d3 =
d1.Union(d2).GroupBy (kvp => kvp.Key)
.ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value);





share|improve this answer


























  • thanks but I tried that and Union leads to Exception with 'An item with the same key has already been added'

    – Chesnokov Yuriy
    Aug 1 '11 at 19:32











  • I fixed it. ` IDictionary<Guid, MyObject> d3 = d1.Union(d2).GroupBy (kvp => kvp.Key) .ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value); `

    – agent-j
    Aug 1 '11 at 22:20











  • thank you very much, that works, how that line avoids duplicate keys? is that faster than d1.Concat(d2.Where(x => !d1.Keys.Contains(x.Key)))?

    – Chesnokov Yuriy
    Aug 2 '11 at 5:27











  • I tested that using Stopwatch, using of Concat is 3 time faster, SO DO NOT USE Union

    – NET3
    Nov 22 '12 at 23:00






  • 1





    Much more readable than accepted answer.

    – nawfal
    May 26 '16 at 12:40
















5














d1.Union(d2).GroupBy (kvp => kvp.Key).ToDictionary(kvp => kvp.Key, kvp => kvp.First().Value); out to do the trick.



IDictionary<Guid, MyObject> d1 = new Dictionary<Guid, MyObject>();
d1.Add(guid1, m1);
d1.Add(guid2, m2);
d1.Add(guid3, m3);
IDictionary<Guid, MyObject> d2 = new Dictionary<Guid, MyObject>();
d2.Add(guid2, m2);
d2.Add(guid3, m3);
d2.Add(guid4, m4);
IDictionary<Guid, MyObject> d3 =
d1.Union(d2).GroupBy (kvp => kvp.Key)
.ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value);





share|improve this answer


























  • thanks but I tried that and Union leads to Exception with 'An item with the same key has already been added'

    – Chesnokov Yuriy
    Aug 1 '11 at 19:32











  • I fixed it. ` IDictionary<Guid, MyObject> d3 = d1.Union(d2).GroupBy (kvp => kvp.Key) .ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value); `

    – agent-j
    Aug 1 '11 at 22:20











  • thank you very much, that works, how that line avoids duplicate keys? is that faster than d1.Concat(d2.Where(x => !d1.Keys.Contains(x.Key)))?

    – Chesnokov Yuriy
    Aug 2 '11 at 5:27











  • I tested that using Stopwatch, using of Concat is 3 time faster, SO DO NOT USE Union

    – NET3
    Nov 22 '12 at 23:00






  • 1





    Much more readable than accepted answer.

    – nawfal
    May 26 '16 at 12:40














5












5








5







d1.Union(d2).GroupBy (kvp => kvp.Key).ToDictionary(kvp => kvp.Key, kvp => kvp.First().Value); out to do the trick.



IDictionary<Guid, MyObject> d1 = new Dictionary<Guid, MyObject>();
d1.Add(guid1, m1);
d1.Add(guid2, m2);
d1.Add(guid3, m3);
IDictionary<Guid, MyObject> d2 = new Dictionary<Guid, MyObject>();
d2.Add(guid2, m2);
d2.Add(guid3, m3);
d2.Add(guid4, m4);
IDictionary<Guid, MyObject> d3 =
d1.Union(d2).GroupBy (kvp => kvp.Key)
.ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value);





share|improve this answer















d1.Union(d2).GroupBy (kvp => kvp.Key).ToDictionary(kvp => kvp.Key, kvp => kvp.First().Value); out to do the trick.



IDictionary<Guid, MyObject> d1 = new Dictionary<Guid, MyObject>();
d1.Add(guid1, m1);
d1.Add(guid2, m2);
d1.Add(guid3, m3);
IDictionary<Guid, MyObject> d2 = new Dictionary<Guid, MyObject>();
d2.Add(guid2, m2);
d2.Add(guid3, m3);
d2.Add(guid4, m4);
IDictionary<Guid, MyObject> d3 =
d1.Union(d2).GroupBy (kvp => kvp.Key)
.ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value);






share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 23 '12 at 21:17

























answered Aug 1 '11 at 19:20









agent-jagent-j

22.4k43973




22.4k43973













  • thanks but I tried that and Union leads to Exception with 'An item with the same key has already been added'

    – Chesnokov Yuriy
    Aug 1 '11 at 19:32











  • I fixed it. ` IDictionary<Guid, MyObject> d3 = d1.Union(d2).GroupBy (kvp => kvp.Key) .ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value); `

    – agent-j
    Aug 1 '11 at 22:20











  • thank you very much, that works, how that line avoids duplicate keys? is that faster than d1.Concat(d2.Where(x => !d1.Keys.Contains(x.Key)))?

    – Chesnokov Yuriy
    Aug 2 '11 at 5:27











  • I tested that using Stopwatch, using of Concat is 3 time faster, SO DO NOT USE Union

    – NET3
    Nov 22 '12 at 23:00






  • 1





    Much more readable than accepted answer.

    – nawfal
    May 26 '16 at 12:40



















  • thanks but I tried that and Union leads to Exception with 'An item with the same key has already been added'

    – Chesnokov Yuriy
    Aug 1 '11 at 19:32











  • I fixed it. ` IDictionary<Guid, MyObject> d3 = d1.Union(d2).GroupBy (kvp => kvp.Key) .ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value); `

    – agent-j
    Aug 1 '11 at 22:20











  • thank you very much, that works, how that line avoids duplicate keys? is that faster than d1.Concat(d2.Where(x => !d1.Keys.Contains(x.Key)))?

    – Chesnokov Yuriy
    Aug 2 '11 at 5:27











  • I tested that using Stopwatch, using of Concat is 3 time faster, SO DO NOT USE Union

    – NET3
    Nov 22 '12 at 23:00






  • 1





    Much more readable than accepted answer.

    – nawfal
    May 26 '16 at 12:40

















thanks but I tried that and Union leads to Exception with 'An item with the same key has already been added'

– Chesnokov Yuriy
Aug 1 '11 at 19:32





thanks but I tried that and Union leads to Exception with 'An item with the same key has already been added'

– Chesnokov Yuriy
Aug 1 '11 at 19:32













I fixed it. ` IDictionary<Guid, MyObject> d3 = d1.Union(d2).GroupBy (kvp => kvp.Key) .ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value); `

– agent-j
Aug 1 '11 at 22:20





I fixed it. ` IDictionary<Guid, MyObject> d3 = d1.Union(d2).GroupBy (kvp => kvp.Key) .ToDictionary (kvp => kvp.Key, kvp => kvp.First ().Value); `

– agent-j
Aug 1 '11 at 22:20













thank you very much, that works, how that line avoids duplicate keys? is that faster than d1.Concat(d2.Where(x => !d1.Keys.Contains(x.Key)))?

– Chesnokov Yuriy
Aug 2 '11 at 5:27





thank you very much, that works, how that line avoids duplicate keys? is that faster than d1.Concat(d2.Where(x => !d1.Keys.Contains(x.Key)))?

– Chesnokov Yuriy
Aug 2 '11 at 5:27













I tested that using Stopwatch, using of Concat is 3 time faster, SO DO NOT USE Union

– NET3
Nov 22 '12 at 23:00





I tested that using Stopwatch, using of Concat is 3 time faster, SO DO NOT USE Union

– NET3
Nov 22 '12 at 23:00




1




1





Much more readable than accepted answer.

– nawfal
May 26 '16 at 12:40





Much more readable than accepted answer.

– nawfal
May 26 '16 at 12:40











0














You could try something like



d1.Concat(d2).Distinct(kv => kv.Key).ToDictionary(kv => kv.Key, kv => kv.Value)


The result of concat makes use of the fact that the dictionary is an IEnumerable<KeyvaluePair<Guid,MyObject>>



Since I do not have a compiler I just checked that Distinct cannot accept just a lambda selecting the property to be compared. However it can accept an EqualityComparer. What I often have in projects is a Generic Equality Comparer that allows to pass in lambdas which define the equality operation.






share|improve this answer
























  • yes, equality comparer is needed

    – Chesnokov Yuriy
    Aug 1 '11 at 19:39
















0














You could try something like



d1.Concat(d2).Distinct(kv => kv.Key).ToDictionary(kv => kv.Key, kv => kv.Value)


The result of concat makes use of the fact that the dictionary is an IEnumerable<KeyvaluePair<Guid,MyObject>>



Since I do not have a compiler I just checked that Distinct cannot accept just a lambda selecting the property to be compared. However it can accept an EqualityComparer. What I often have in projects is a Generic Equality Comparer that allows to pass in lambdas which define the equality operation.






share|improve this answer
























  • yes, equality comparer is needed

    – Chesnokov Yuriy
    Aug 1 '11 at 19:39














0












0








0







You could try something like



d1.Concat(d2).Distinct(kv => kv.Key).ToDictionary(kv => kv.Key, kv => kv.Value)


The result of concat makes use of the fact that the dictionary is an IEnumerable<KeyvaluePair<Guid,MyObject>>



Since I do not have a compiler I just checked that Distinct cannot accept just a lambda selecting the property to be compared. However it can accept an EqualityComparer. What I often have in projects is a Generic Equality Comparer that allows to pass in lambdas which define the equality operation.






share|improve this answer













You could try something like



d1.Concat(d2).Distinct(kv => kv.Key).ToDictionary(kv => kv.Key, kv => kv.Value)


The result of concat makes use of the fact that the dictionary is an IEnumerable<KeyvaluePair<Guid,MyObject>>



Since I do not have a compiler I just checked that Distinct cannot accept just a lambda selecting the property to be compared. However it can accept an EqualityComparer. What I often have in projects is a Generic Equality Comparer that allows to pass in lambdas which define the equality operation.







share|improve this answer












share|improve this answer



share|improve this answer










answered Aug 1 '11 at 19:18









flqflq

18.3k34469




18.3k34469













  • yes, equality comparer is needed

    – Chesnokov Yuriy
    Aug 1 '11 at 19:39



















  • yes, equality comparer is needed

    – Chesnokov Yuriy
    Aug 1 '11 at 19:39

















yes, equality comparer is needed

– Chesnokov Yuriy
Aug 1 '11 at 19:39





yes, equality comparer is needed

– Chesnokov Yuriy
Aug 1 '11 at 19:39











0














When no duplicates keys exist, the following works for 2 (or more) dictionaries:



var dictionaries = new  { d1, d2 };
var result = dictionaries.SelectMany(dict => dict)
.ToDictionary(pair => pair.Key, pair => pair.Value);





share|improve this answer



















  • 1





    ok, there are duplicates present

    – Chesnokov Yuriy
    Aug 1 '11 at 19:40
















0














When no duplicates keys exist, the following works for 2 (or more) dictionaries:



var dictionaries = new  { d1, d2 };
var result = dictionaries.SelectMany(dict => dict)
.ToDictionary(pair => pair.Key, pair => pair.Value);





share|improve this answer



















  • 1





    ok, there are duplicates present

    – Chesnokov Yuriy
    Aug 1 '11 at 19:40














0












0








0







When no duplicates keys exist, the following works for 2 (or more) dictionaries:



var dictionaries = new  { d1, d2 };
var result = dictionaries.SelectMany(dict => dict)
.ToDictionary(pair => pair.Key, pair => pair.Value);





share|improve this answer













When no duplicates keys exist, the following works for 2 (or more) dictionaries:



var dictionaries = new  { d1, d2 };
var result = dictionaries.SelectMany(dict => dict)
.ToDictionary(pair => pair.Key, pair => pair.Value);






share|improve this answer












share|improve this answer



share|improve this answer










answered Aug 1 '11 at 19:19









Chaim ZonnenbergChaim Zonnenberg

1,549119




1,549119








  • 1





    ok, there are duplicates present

    – Chesnokov Yuriy
    Aug 1 '11 at 19:40














  • 1





    ok, there are duplicates present

    – Chesnokov Yuriy
    Aug 1 '11 at 19:40








1




1





ok, there are duplicates present

– Chesnokov Yuriy
Aug 1 '11 at 19:40





ok, there are duplicates present

– Chesnokov Yuriy
Aug 1 '11 at 19:40











0














Union looks good:
http://msdn.microsoft.com/en-us/vcsharp/aa336761.aspx#union1






share|improve this answer
























  • that does not work well with class instance in the value

    – Chesnokov Yuriy
    Aug 1 '11 at 19:35
















0














Union looks good:
http://msdn.microsoft.com/en-us/vcsharp/aa336761.aspx#union1






share|improve this answer
























  • that does not work well with class instance in the value

    – Chesnokov Yuriy
    Aug 1 '11 at 19:35














0












0








0







Union looks good:
http://msdn.microsoft.com/en-us/vcsharp/aa336761.aspx#union1






share|improve this answer













Union looks good:
http://msdn.microsoft.com/en-us/vcsharp/aa336761.aspx#union1







share|improve this answer












share|improve this answer



share|improve this answer










answered Aug 1 '11 at 19:26









Paul NikonowiczPaul Nikonowicz

2,6431234




2,6431234













  • that does not work well with class instance in the value

    – Chesnokov Yuriy
    Aug 1 '11 at 19:35



















  • that does not work well with class instance in the value

    – Chesnokov Yuriy
    Aug 1 '11 at 19:35

















that does not work well with class instance in the value

– Chesnokov Yuriy
Aug 1 '11 at 19:35





that does not work well with class instance in the value

– Chesnokov Yuriy
Aug 1 '11 at 19:35


















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