Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Something like this should work for 3->2:</p> <pre class="lang-cs prettyprint-override"><code>static T[][] Collapse&lt;T&gt;(T[][][] array, int y) { return Enumerable.Range(0, array.Length).Select(x =&gt; Enumerable.Range(0, array[x][y].Length).Select(z =&gt; array[x][y][z] ).ToArray() ).ToArray(); } </code></pre> <p>It should be fairly obvious how to extend this pattern to higher dimensional problems.</p> <p><em><strong>Edit:</strong></em></p> <p>This extends to multidimensional arrays in the expected manner. If you're interested in returning a multidimensional array (as opposed to a jagged array), LINQ probably isn't the tool that you want to use to solve this problem as it provides no obvious or intuitive methods for handling multidimensional array creation.</p> <p>If you really want the multidimensional array as output, I've included a sample "deburr" implementation that should collapse it back to a multidimensional (non-jagged) array.</p> <pre class="lang-cs prettyprint-override"><code>static T[][] Collapse&lt;T&gt;(T[,,] array, int y) { return Enumerable.Range(0, array.GetLength(0)).Select(x =&gt; Enumerable.Range(0, array.GetLength(2)).Select(z =&gt; array[x,y,z] ).ToArray() ).ToArray(); } static T[,] Deburr&lt;T&gt;(T[][] jagged) { T[,] mArray = new T[jagged.Length, jagged.Max(array =&gt; array.Length)]; foreach (int row in Enumerable.Range(0, jagged.Length)) foreach (int col in Enumerable.Range(0, jagged[row].Length)) mArray[row, col] = jagged[row][col]; return mArray; } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POget partition ((N-1)-dimensional instance of the N-dimensional array) of a multidimensional array with LINQ
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USAndrew Coonce
    1. USAndrew Coonce
    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. This table or related slice is empty.
    1. COcould you please put the example input from the edit of the post into your function? I changed [][][] to [,,] etc, but still don't get it running
      singulars
      1. PO
      1. USMax Li
    2. COI've updated the answer to include multidimensional examples.
      singulars
      1. PO
      1. USAndrew Coonce
 

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