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I am not getting the question. Could you please rephrase your question.<br />
<br />
If you are looking for the number of days each number was not used then from your example above the number 30 was only only used one day of three and so would return 2. Not sure how it could return 0. If I am on the right track then we would also need to number range being used so we can check for numbers that have not been used at all.
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I am not getting the question. Could you please rephrase your question.

If you are looking for the number of days each number was not used then from your example above the number 30 was only only used one day of three and so would return 2. Not sure how it could return 0. If I am on the right track then we would also need to number range being used so we can check for numbers that have not been used at all.

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Not a problem Philippe, glad to help.
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<div class="content wysiwyg-content">
Hello EE,<br />
<br />
I got a dictionnary(Of Integer, Class1)<br />
the class1 is made of a date and a number.<br />
<br />
Lets say my dictionar is as follow :<br />
<br />
0 - 2015/2/13, 5<br />
1 - 2015/2/13, 11<br />
2 - 2015/2/13, 30<br />
3 - 2015/2/14, 1<br />
4 - 2015/2/14, 11<br />
5 - 2015/2/14, 44<br />
6 - 2015/2/15, 30<br />
<br />
<br />
what I would like to accomplish.. is to calculate for each number, what is the number of days that it was not taken.<br />
For example, the number 30 would be 0 because i got that number today. But the number 5 would be 2<br />
for the number 44 it would be 1.<br />
<br />
any help?<br />
Thanks!
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Hello EE,

I got a dictionnary(Of Integer, Class1)
the class1 is made of a date and a number.

Lets say my dictionar is as follow :

0 - 2015/2/13, 5
1 - 2015/2/13, 11
2 - 2015/2/13, 30
3 - 2015/2/14, 1
4 - 2015/2/14, 11
5 - 2015/2/14, 44
6 - 2015/2/15, 30


what I would like to accomplish.. is to calculate for each number, what is the number of days that it was not taken.
For example, the number 30 would be 0 because i got that number today. But the number 5 would be 2
for the number 44 it would be 1.

any help?
Thanks!

Help with a VB.NET Dictionnary

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,

Visual Basic.NET

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.