Databases
StackOverflow2013
Postsdbo
POc++ can one turn a string value into a type?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POc++ can one turn a string value into a type?
    primarykey
    data
    text
    <p>I am trying to write some generic code:</p> <pre><code>int _pID = _plant-&gt;getPlantInternalID(); std::string _plantName = getPlantBasedUponInternalID(_pID); </code></pre> <p><code>_plantName</code> returns a string of the plant, like <code>Broccoli</code></p> <p>but is there a way to do something like this:</p> <pre><code>for (int f=0; f &lt; _f.getPlants().size(); f++) { std::shared_ptr&lt;Plant&gt; sbas = _f.getPlants().at(f); std::shared_ptr&lt;_plantName&gt; sder2 = std::dynamic_pointer_cast&lt;_plantName&gt;(sbas); } </code></pre> <p>notice I am putting in <code>_plantName</code> but really I need to do something like:</p> <pre><code>std::shared_ptr&lt;Broccoli&gt; sder2 = std::dynamic_pointer_cast&lt;Broccoli&gt;(sbas); </code></pre> <p>what is needing to do something like this called and how do I accomplish it?</p> <p>UPDATE: I am just getting the ID based upon an internal ID I made up:</p> <pre><code>std::string HUDForStatus::getPlantBasedUponInternalID(int _id) { switch (_id) { case 114: // Asparagus return ASPARAGUS::plantName.c_str(); break; case 113: // Beets return BEETS::plantName.c_str(); break; case 115: // Bok Choy return BOKCHOY::plantName.c_str(); break; case 107: // Broccoli return BROCCOLI::plantName.c_str(); break; case 101: // Carrot return CARROT::plantName.c_str(); break; case 110: // Celery return CELERY::plantName.c_str(); break; case 103: // Corn return CORN::plantName.c_str(); break; case 116: // Eggplant return EGGPLANT::plantName.c_str(); break; case 102: // Green Beans return GREENBEANS::plantName.c_str(); break; ... &lt;snip&gt;... } </code></pre> <p>}</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USJason
    1. USJason
    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
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POc++ can one turn a string value into a type?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POc++ can one turn a string value into a type?
      1. This table or related slice is empty.
      1. VTDownMod
    3. VO
      singulars
      1. POc++ can one turn a string value into a type?
      1. This table or related slice is empty.
      1. VTDownMod
    1. COSo _plantName is a string and you want to get a type from it? How is `getPlantBasedUponInternalID` determining the string to return? I'd imagine that if you can get the type from the ID, then why don't you do that?
      singulars
      1. POc++ can one turn a string value into a type?
      1. This table or related slice is empty.
    2. COI made an update so you can see. So you are saying just make a function that returns the `shared_ptr` based upon the ID like I do for the string. I had not thought of that, simple I guess.
      singulars
      1. POc++ can one turn a string value into a type?
      1. USJason
    3. COWhy do you need this? Why you can't just work with a pointer of type Plant*?
      singulars
      1. POc++ can one turn a string value into a type?
      1. USScintillo
 

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