Databases
StackOverflow2013
Postsdbo
POhow create array of arrays of unequal depth, holding integers only (Android)
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POhow create array of arrays of unequal depth, holding integers only (Android)
    primarykey
    data
    text
    <p>How do I create an array that looks like this: </p> <pre><code>[[1,2,[[3,3,3,3,3],[4,4,4,4,4]],[15,20],35,[2,1]], [2,2,[[6,6,6,6,6],[1,2,3,4,5]],[30,15],45,[2,1]], [2,2,[[6,6,6,6,6],[1,2,3,4,5]],[30,15],45,[2,1]], [2,2,[[6,6,6,6,6],[1,2,3,4,5]],[30,15],45,[2,1]], ...] </code></pre> <p>So a 4-dimensional array, holding integer values only, and with array's within array's but of unequal depth.</p> <p>[edited] Using named elements I would get this declaration: </p> <pre><code>// containerarray spelersSpel: private ArrayList&lt;ArrayList&lt;ArrayList&lt;ArrayList&lt;Integer&gt;&gt;&gt;&gt; spelersSpel_ = new ArrayList&lt;ArrayList&lt;ArrayList&lt;ArrayList&lt;Integer&gt;&gt;&gt;&gt;(); // holding: // first-level element of spelersSpel: private ArrayList&lt;ArrayList&lt;ArrayList&lt;Integer&gt;&gt;&gt; spelerSpel = new ArrayList&lt;ArrayList&lt;ArrayList&lt;Integer&gt;&gt;&gt;(); // holding: // first element of spelerSpel: private int spelerNummer; // second element of spelerSpel: private int spelerBeurtNummer; // third element of spelerSpel: private ArrayList&lt;ArrayList&lt;Integer&gt;&gt;spelerBeurtenWorpenScore = new ArrayList&lt;ArrayList&lt;Integer&gt;&gt;(); // holding: private ArrayList&lt;Integer&gt;spelerBeurtWorpenScore = new ArrayList&lt;Integer&gt;(); // holding: private int spelerBeurtWorpScore; // fourth element of spelerSpel: private ArrayList&lt;Integer&gt;spelerBeurtenTotaal = new ArrayList&lt;Integer&gt;(); // fifth element of spelerSpel: private ArrayList&lt;Integer&gt;spelerBanen = new ArrayList&lt;Integer&gt;(); // holding: private int spelerBaan; </code></pre> <p>and putting values in them like this: </p> <pre><code>@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); spelerBaan = 2; spelerBanen.add(spelerBaan); spelerSpel.add(spelerBanen); </code></pre> <p>However then I'm still having a problem, on the last line, adding array spelerBanen to spelerSpel, because spelerSpel expects EVERY (first-level) element now to be a two-dimensional array, which spelerBanen isn't. How to solve that? I could think of using a dummy placeholder, like </p> <pre><code>ArrayList&lt;ArrayList&lt;Integer&gt;&gt;dummy = new ArrayList&lt;ArrayList&lt;Integer&gt;&gt;(); dummy.add(spelerBanen); spelerSpel.add(dummy); </code></pre> <p>but that doesn't seem to be a great solution to me either?</p> <p>[edited] My idea would be to change the declaration of spelerSpel to:</p> <pre><code>private ArrayList&lt;ArrayList&lt;ArrayList&lt;Integer&gt;&gt;&gt; spelerSpel = new ArrayList&lt;ArrayList&lt;ArrayList&lt;Integer&gt;&gt;&gt;(5); </code></pre> <p>so with 'fixed' length of 5. and then:</p> <pre><code>spelerBaan = 2; spelerBanen.set(0, spelerBaan); spelerSpel.get(0).set(0,spelerBanen); spelersSpel.add(spelerSpel); </code></pre> <p>I would still be stuck with an array holding a lot of 'dummy' values but I can't figure out how to do it better.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USuser1837293
    1. USuser1837293
    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. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COWhat language are you using? In JavaScript, you're already done.
      singulars
      1. POhow create array of arrays of unequal depth, holding integers only (Android)
      1. USGereon
    2. COJava (for an Android 2.2 app)
      singulars
      1. POhow create array of arrays of unequal depth, holding integers only (Android)
      1. USuser1837293
    3. COI certainly do not want to read that code later... Every developer will need to know very precisely what the values in the array mean! I believe on the long term you would be better off creating a class to hold that kind of non-homogenous information.
      singulars
      1. POhow create array of arrays of unequal depth, holding integers only (Android)
      1. USJean Hominal
 

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