Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>How about following way of generating combinations using .Join method?</p> <pre><code>static void Main() { List&lt;List&lt;int&gt;&gt; collectionOfSeries = new List&lt;List&lt;int&gt;&gt; { new List&lt;int&gt;(){1, 2, 3, 4, 5}, new List&lt;int&gt;(){0, 1}, new List&lt;int&gt;(){6,3}, new List&lt;int&gt;(){1,3,5} }; int[] result = new int[collectionOfSeries.Count]; List&lt;List&lt;int&gt;&gt; combinations = GenerateCombinations(collectionOfSeries); Display(combinations); } </code></pre> <p>This Method <strong>GenerateCombinations(..)</strong> does main work of generating combinations. <strong>This method is generic so could be used for generating combinations of any type.</strong> </p> <pre><code>private static List&lt;List&lt;T&gt;&gt; GenerateCombinations&lt;T&gt;( List&lt;List&lt;T&gt;&gt; collectionOfSeries) { List&lt;List&lt;T&gt;&gt; generatedCombinations = collectionOfSeries.Take(1) .FirstOrDefault() .Select(i =&gt; (new T[]{i}).ToList()) .ToList(); foreach (List&lt;T&gt; series in collectionOfSeries.Skip(1)) { generatedCombinations = generatedCombinations .Join(series as List&lt;T&gt;, combination =&gt; true, i =&gt; true, (combination, i) =&gt; { List&lt;T&gt; nextLevelCombination = new List&lt;T&gt;(combination); nextLevelCombination.Add(i); return nextLevelCombination; }).ToList(); } return generatedCombinations; } </code></pre> <p>Display helper..</p> <pre><code>private static void Display&lt;T&gt;(List&lt;List&lt;T&gt;&gt; generatedCombinations) { int index = 0; foreach (var generatedCombination in generatedCombinations) { Console.Write("{0}\t:", ++index); foreach (var i in generatedCombination) { Console.Write("{0,3}", i); } Console.WriteLine(); } Console.ReadKey(); } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POCombination of List<List<int>>
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USJohn Conde
    1. USAbhijeet Nagre
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUndeletion
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload