Databases
StackOverflow2013
Postsdbo
POHow best to handle interdependent properties?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow best to handle interdependent properties?
    primarykey
    data
    text
    <p>Perhaps properties aren't the way to go with this, but I'm struggling to find an answer as for a good solution.</p> <pre class="lang-cs prettyprint-override"><code>public class Blah { public double A { get{ return _B / _C; } } public double B { get{ return _A * _C; } set{ _B = value; } } public double C { get{ return _B / _A; } set{ _C = value; } } private double _A; private double _B; private double _C; public Blah(){} public Blah(double a, double b, double c) { this._A = a; this._B = b; this._C = c; } } </code></pre> <p>Assuming A is always a read-only property, what's a good way to go about handling an arbitrary amount of additional properties that may affect the output of A? I feel this is a bad (completely wrong!) way to do this because I should always be able to retrieve a value I assign. For example, if I assign B = 3, then I should be able to get 3 the next time I call B instead of getting _A * _C.</p> <p>However, I need for this type of interdependence to exist (or a completely different approach that achieves the same goal). All of the values are related, so I need for the change of one value to be reflected in the others.</p> <p>I just can't figure out the appropriate way to do this.</p> <p><strong>Edit</strong></p> <p>I made a bad example. In reality, the non-A values aren't dependent on A, but only each other -- B affects C, C affects D, etc; however, A is just some combination of those values. Not sure if that matters as for how to best approach this, but thought it was worth mentioning.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USKarlHungus
    1. USKarlHungus
    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
    2. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COMaybe i'm missing it, but who assigns _A?
      singulars
      1. POHow best to handle interdependent properties?
      1. USMerickOWA
    2. COYou're right. I've added it, but it's not representative of the problem I'm trying to apply this to. With what I'm working on, A is purely an output, and wouldn't ever be assigned.
      singulars
      1. POHow best to handle interdependent properties?
      1. USKarlHungus
 

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