Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Something like this might suit your needs.</p> <pre><code>/// &lt;summary&gt; /// Represents a pool of objects with a size limit. /// &lt;/summary&gt; /// &lt;typeparam name="T"&gt;The type of object in the pool.&lt;/typeparam&gt; public sealed class ObjectPool&lt;T&gt; : IDisposable where T : new() { private readonly int size; private readonly object locker; private readonly Queue&lt;T&gt; queue; private int count; /// &lt;summary&gt; /// Initializes a new instance of the ObjectPool class. /// &lt;/summary&gt; /// &lt;param name="size"&gt;The size of the object pool.&lt;/param&gt; public ObjectPool(int size) { if (size &lt;= 0) { const string message = "The size of the pool must be greater than zero."; throw new ArgumentOutOfRangeException("size", size, message); } this.size = size; locker = new object(); queue = new Queue&lt;T&gt;(); } /// &lt;summary&gt; /// Retrieves an item from the pool. /// &lt;/summary&gt; /// &lt;returns&gt;The item retrieved from the pool.&lt;/returns&gt; public T Get() { lock (locker) { if (queue.Count &gt; 0) { return queue.Dequeue(); } count++; return new T(); } } /// &lt;summary&gt; /// Places an item in the pool. /// &lt;/summary&gt; /// &lt;param name="item"&gt;The item to place to the pool.&lt;/param&gt; public void Put(T item) { lock (locker) { if (count &lt; size) { queue.Enqueue(item); } else { using (item as IDisposable) { count--; } } } } /// &lt;summary&gt; /// Disposes of items in the pool that implement IDisposable. /// &lt;/summary&gt; public void Dispose() { lock (locker) { count = 0; while (queue.Count &gt; 0) { using (queue.Dequeue() as IDisposable) { } } } } } </code></pre> <p><strong>Example Usage</strong></p> <pre><code>public class ThisObject { private readonly ObjectPool&lt;That&gt; pool = new ObjectPool&lt;That&gt;(100); public void ThisMethod() { var that = pool.Get(); try { // Use that .... } finally { pool.Put(that); } } } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POC# Object Pooling Pattern implementation
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USChaosPandion
    1. USChaosPandion
    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. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COScratch that earlier comment. I think I just found it strange because this pool doesn't seem to have any thresholds, and maybe it doesn't need to, it would depend on the requirements.
      singulars
      1. PO
      1. USAaronaught
    2. CO@Aaronaught - Is it really that odd? I wanted to create a lightweight pool that offers just the functionality needed. It is up to the client to use the class properly.
      singulars
      1. PO
      1. USChaosPandion
    3. CO+1 for a very simple solution that can be adapted to my purposes by just changing the backing type to be a List/HashTable etc and changing the counter to roll over. Random question how do you handle management of the pool object itself? Do you just stick it into an IOC container defining it to be singleton there?
      singulars
      1. PO
      1. USChris Marisic
 

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