ConcCurrentDictionary Initialize

Question

Is it possible to declare and initialize a ConcurrentDictionary? Maybe something like the Dictionary:

Dim Stuff = New ConcurrentDictionary(Of Integer, Integer) From {{0, 1}, {2, 3}}

No, a collection class must have an Add() method to allow an initializer. ConcurrentDictionary has TryAdd(). Wanting to do this is quite strange and likely to be wrong. — Hans Passant, Feb 01 '14 at 08:33

tinstaafl · Accepted Answer · 2014-02-01T06:17:37.070

It looks like what you want is something like this:

Dim Stuff As New ConcurrentDictionary(Of Integer, Integer) _
    ({
            New KeyValuePair(Of Integer, Integer)(1, 2),
            New KeyValuePair(Of Integer, Integer)(3, 4),
            New KeyValuePair(Of Integer, Integer)(5, 6)})

ConcurrentDictionary can't use an initializer like the Dictionary since that method relies on having an Add method and ConcurrentDictionary only has AddOrUpdate.

score 0 · Answer 2 · answered Feb 01 '14 at 13:23

0

Just use a Dictionary as an intermediate storage, and this constructor of ConcurrentDictionary:

Dim Stuff = New Dictionary(Of Integer, Integer) From {{0, 1}, {2, 3}}
Dim concurrentStuff = New ConcurrentDictionary(Of Integer, Integer)(Stuff)

answered Feb 01 '14 at 13:23

Victor Zakharov

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ConcCurrentDictionary Initialize

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