Databases
StackOverflow2013
Postsdbo
POHow can I make a custom exception object evaluate to false in an if condition?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow can I make a custom exception object evaluate to false in an if condition?
    primarykey
    data
    text
    <p>I was just wondering if there was any way to make my object return false if placed in an if statement. The reason is I'm making a custom exception class. I would like to be able to do something along the lines of</p> <pre><code>class Dog{ public function lookAround() { if(seeDog()) { return bark; } else { return sit; } } public function seeDog() { if(object == Dog) { return "husky"; } else { return Dog_Exception(no_see); } } } </code></pre> <p>I understand that this is a horrendously stupid example. However, the point is that as this object stands, the <code>if(seeDog())</code> test will evaluate <code>true</code> for both string "husky" and for the <code>Dog_Exception</code> object. If at all possible, i'd like <code>Dog_Exception</code> to evaluate to <code>false</code>, if placed in an <code>if</code> condition. That way I wouldn't have to, for example, use a construct like <code>if(typeof(seeDog()) == Dog_Exception)</code> etc. I doubt this is possible, but any help would be great. Thanks!</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USShog9
    1. USEthan
    plurals
    1. PL
      singulars
      1. LTLinked
    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
    3. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COYou guys are missing the point of the question. Exception was the wrong object to use. Change it to "Result" or whatever. The point has nothing to do with that, and is just "is it possible to make and object return false when put in an if statement"
      singulars
      1. POHow can I make a custom exception object evaluate to false in an if condition?
      1. USEthan
    2. COHey everyone, because I phrased my question stupidly, I reasked my question over here: http://stackoverflow.com/questions/1182710/is-it-possible-to-make-an-object-return-false-by-default Thanks to those who helped.
      singulars
      1. POHow can I make a custom exception object evaluate to false in an if condition?
      1. USEthan
 

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