As the **[RCP tutorial][1]** details

&gt; Plugins are the smallest deployable and installable software components of Eclipse.
&gt;
&gt;Each plugin can define extension-points which define possibilities for functionality contributions (code and non-code) by other plugins. Non-code functionality contributions can, for example, provide help content.
&gt;
&gt;The basis for this architecture is the runtime environment Equinox of Eclipse which is the reference implementation of OSGI. See [OSGi development - Tutorial][2] for details.  
The Plugin concept of Eclipse is the same as the bundle concept of OSGI. Generally speaking a OSGI bundle equals a Plugin and vice-versa.

![first rcp][3]

----

The **[Feature Tutorial][4]** mentions

&gt;A feature project is basically a **list of plugins and other features which can be understood as a logical separate unit**.
&gt;
&gt;Eclipse uses feature projects for the updates manager and for the build process. You can also supply a software license with a feature

![new feature][5]

-----

Finally, a **[product][6]** is a stand-alone program built with the Eclipse platform. A product may optionally be packaged and delivered as one or more features, which are simply groupings of plug-ins that are managed as a single entity by the Eclipse update mechanisms.

![Product definition file show the overview tab][7]

-----

So:

**plugins can be grouped into features which can be packaged as one executable unit called product**.


  [1]: http://www.vogella.com/articles/EclipseRCP/article.html
  [2]: http://www.vogella.com/articles/OSGi/article.html
  [3]: http://i.stack.imgur.com/X4img.png
  [4]: http://www.vogella.com/articles/EclipseFeatureProject/article.html
  [5]: http://i.stack.imgur.com/fwmmG.png
  [6]: http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse.pde.doc.user/concepts/product.htm
  [7]: http://i.stack.imgur.com/EmfVT.png

I already know about &lt;kbd&gt;Ctrl&lt;/kbd&gt; + &lt;kbd&gt;L&lt;/kbd&gt; to delete an entire line...is there one to just select an entire line (which I can then copy and paste somewhere else...)



Visual Studio - Is there a keyboard combination to select an entire line?

I have a set 

    set([&#39;booklet&#39;, &#39;4 sheets&#39;, &#39;48 sheets&#39;, &#39;12 sheets&#39;])

After sorting I want it to look like 

    4 sheets,
    12 sheets,
    48 sheets,
    booklet

Any idea please


How to sort alpha numeric set in python

What are the differences? What gets used for which purpose?

What are the differences between plug-ins, features, and products in Eclipse RCP?

<p>What are the differences? What gets used for which purpose?</p>


I&#39;ve been running STS 2.3.2 on a MacBook Pro for a few days now. I&#39;m finding the performance to be significantly slower than any other build of Eclipse I&#39;ve used. For example, switching from one tab to another can take up to 4 seconds.

I tried turning off much of the validation, and increasing the memory, but it&#39;s not making a difference.

Are others having similar experiences?

Why is SpringSource Tool Suite (STS) so slow? And how can I fix it?

I have a few really long strings in one class for initializing user information. When I compile in Eclipse, I don&#39;t get any errors or warnings, and the resulting .jar runs fine.

Recently, I decided to create an ant build file to use. Whenever I compile the same class with ant, I get the &quot;constant string too long&quot; compile error. I&#39;ve tried a number of ways to set the java compiler executable in ant to make sure that I&#39;m using the exact same version as in Eclipse.

I&#39;d rather figure out how to get the same successful compile I get in Eclipse in Ant than try to rework the code to dynamically concatenate the strings.

Java &quot;constant string too long&quot; compile error. Only happens using Ant, not when using Eclipse

Can anyone point to a functioning [JSLint][1] plug-in for Eclipse?

  [1]: http://www.jslint.com/

Is there a working JSLint Eclipse plug-in?

I&#39;m using the PMD plugin for eclipse and it gives me an error when using `System.out.println()` with the explanation:

&gt; System.(out|err).print is used, consider using a logger.

My question is - What is a Logger? How is it used to print to the screen? Why is it better?

Logger vs. System.out.println

I&#39;ve found out that my R.java is never updated, so it doesn&#39;t contain information about my new resources, so I decided to delete it and thought that Eclipse would generate a new one. But that didn&#39;t happen, and I don&#39;t have R.java now. How can I regenerate one?

I&#39;m using Windows&amp;nbsp;7. 

From one of the comments: &quot;Doing *Project* -&gt; *Clean* is what caused the problem for me. Cleaning deletes R.java...and for whatever reason the plugin is not regenerating the file.&quot;


Developing for Android in Eclipse: R.java not regenerating

What is the difference between these things from an Eclipse installation?

* plugins
* features
* dropins folder 

What is the correct use of these folders?


Eclipse plugins vs features vs dropins

A repeating theme in my development work has been the use of or creation of an in-house plug-in architecture.  I&#39;ve seen it approached many ways - configuration files (XML, .conf, and so on), inheritance frameworks, database information, libraries, and others.  In my experience:

 - A database isn&#39;t a great place to store your configuration information, especially co-mingled with data
 - Attempting this with an inheritance hierarchy requires knowledge about the plug-ins to be coded in, meaning the plug-in architecture isn&#39;t all that dynamic
 - Configuration files work well for providing simple information, but can&#39;t handle more complex behaviors
 - Libraries seem to work well, but the one-way dependencies have to be carefully created.

As I seek to learn from the various architectures I&#39;ve worked with, I&#39;m also looking to the community for suggestions.  How have you implemented a SOLID plug-in architecture?  What was your worst failure (or the worst failure you&#39;ve seen)?  What would you do if you were going to implement a new plug-in architecture?  What SDK or open source project that you&#39;ve worked with has the best example of a good architecture?

A few examples I&#39;ve been finding on my own:

 - Perl&#39;s [Module::Plugable][1] and [IOC][2] for dependency injection in Perl
 - [The various Spring frameworks][8] (Java, .NET, Python) for dependency injection.
 - An [SO question][3] with a list for Java (including [Service Provider Interfaces][4])
 - An [SO question][5] for C++ pointing to a [Dr. Dobbs article][6]
 - An [SO question][7] regarding a specific plugin idea for ASP.NET MVC

These examples seem to play to various language strengths.  Is a good plugin architecture necessarily tied to the language?  Is it best to use tools to create a plugin architecture, or to do it on one&#39;s own following models?


  [1]: http://search.cpan.org/~simonw/Module-Pluggable-3.9/lib/Module/Pluggable.pm
  [2]: http://www.drdobbs.com/web-development/184416179
  [3]: https://stackoverflow.com/questions/1613935/java-plugin-framework-choice
  [4]: http://en.wikipedia.org/wiki/Service_Provider_Interface
  [5]: https://stackoverflow.com/questions/43322/whats-safe-for-a-c-plug-in-system
  [6]: http://www.drdobbs.com/cpp/204202899;jsessionid=2P021EF4CUUAFQE1GHPSKH4ATMY32JVN?cid=RSSfeed%255FDDJ%255FCpp
  [7]: https://stackoverflow.com/questions/340183/plug-in-architecture-for-asp-net-mvc
  [8]: http://www.springsource.org/

How To Create a Flexible Plug-In Architecture?

Right now I&#39;m using `surround.vim` to enclose text in HTML tags, and a [plugin][1] that highlights text according to the hex value in the CSS file (e.g. #888 will have gray background in the CSS file).

Are there other useful plugins for web development?



**Recommendations**

Here is a list of the plugins mentioned in the answers so far:

 - [surround.vim][2] to enclose text in HTML tags
 - [jslint.vim][3] to check for JavaScript errors with JSLint
 - [Emmet.vim][4] for HTML and CSS high-speed coding
 - [phpfolding.vim][5] to for automatic folding of PHP
 - [Syntastic][6] for automatic syntax checking of e.g. PHP
 - [Exuberant ctags][7] for tagging of a wide array of languages.
 - [Tagbar][tagbar] Helps view/navigate source, displays call signature in status area.


  [1]: http://lanpartei.de/~niklas/vim/after/syntax/css-color-vim.png
  [2]: http://www.vim.org/scripts/script.php?script_id=1697
  [3]: http://www.vim.org/scripts/script.php?script_id=2729
  [4]: http://www.vim.org/scripts/script.php?script_id=2981
  [5]: http://www.vim.org/scripts/script.php?script_id=1623
  [6]: http://www.vim.org/scripts/script.php?script_id=2736
  [7]: http://ctags.sourceforge.net/
  [tagbar]: http://majutsushi.github.com/tagbar/

Useful Vim plugins for web development and design (php, html, css, javascript)?

I see that in different plugins and codes, but I don&#39;t understand what does that function... In the jQuery api isn&#39;t referenced!

What&#39;s the .apply jQuery function?

I started to notice my WD drive getting full and ran a size:gigantic file search on it.  It has turned up several files here:

`F:\SCOTT-SHARED-DESKTOP\My Documents\JPA_SPRING_STRUTS\.metadata\.plugins\org.maven.ide.eclipse\nexus\d9d714e11cb097b3ffcec91cccc65d3e_58.cfs`

that exceed 189,992 KB (189 MB)!

Anyone know about these rascals?

What are the gigantic *.CFS files all about in Eclipse workspace plugin folder?

How to get specific product attribute value if i know product ID without loading whole product?

Magento Product Attribute Get Value

I&#39;ve been looking through a tutorial and book but I can find no mention of a built in product function i.e. of the same type as sum(), but I could not find anything such as `prod()`.

Is the only way I could find the product of items in a list by importing the `mul()` operator?

Is there a built-in product() in Python?

I&#39;m working on the display of the stock availability on the (individual) product page of my Magento theme, and there&#39;s something I don&#39;t completely understand about this.

I see two methods being used in the templates to check whether a product is available for sale:
```php
    Mage_Catalog_Model_Product::isAvailable()
    Mage_Catalog_Model_Product::isSaleable()
```
**My own findings:**  
I see that `isSalable()` (which in turn is called by `isSaleable()`) calls `isAvailable()` but also dispatches two events (`catalog_product_is_salable_before` and `catalog_product_is_salable_after`).

On the frontend, I&#39;ve noticed that in Magento&#39;s base template `isAvailable()` is used to decide whether to display the product as &quot;in stock&quot; or &quot;out of stock&quot;; `isSaleable()` is used to decide something like whether to show an &quot;Add to Cart&quot; button.

On the backend, I&#39;ve noticed that when the stock quantity becomes zero and backorders are *not* allowed, the stock availability of a product goes to &quot;out of stock&quot;.
When the stock quantity becomes zero and backorders *are* allowed, the stock availability of the product remains unchanged.

**Question:**  
The properties &quot;stock availability&quot; and &quot;stock quantity&quot; are obviously linked with each other and the mentioned PHP methods. I would like to know: 

 - what the *semantic* difference between the PHP methods `isAvailable()` and
   `isSaleable()` is and why I would use one over the other;

 - what it is I appear not yet to know about their relation with these properties and Magento&#39;s behavior.

Thank you.

**EDIT:**  
I&#39;ve tried every relevant combination of stock quantity (-1,0,1), stock availability (in/out of), and backorders (on/off) for a product and this is the result:

&lt;pre&gt;
St.Qu  BckOrd  St.Av  isSalable()  isSaleable()  isAvailable()
   -1       0      0            0             0              0
   -1       0      1          N/A           N/A            N/A
   -1       1      0            0             0              0
   -1       1      1            1             1              1
    0       0      0            0             0              0
    0       0      1          N/A           N/A            N/A
    0       1      0            0             0              0
    0       1      1            1             1              1
    1       0      0            0             0              0
    1       0      1            1             1              1
    1       1      0            0             0              0
    1       1      1            1             1              1
&lt;/pre&gt;

Just for the sake of completeness:  
```php
St.Av 0  = out of stock
St.Av 1  = in stock
BckOrd 0 = no backorders allowed
BckOrd 1 = backorders are allowed

```
It is the stock availability switch in Magento that controls the return value of all of the PHP methods, but when backorders are off and stock quantity drops below 1, the stock availability will automatically be reset to &#39;out of stock&#39; (hence the `N/A` rows).

What is the difference between isSaleable() and isAvailable()?

In Woocommerce, I am trying to get product custom attribute values but I fail miserably and I don&#39;t get anything.
 
So I tried: 

    global $woocommerce, $post, $product;
    $res = get_post_meta($product-&gt;id);
    print_r(unserialize($res[&#39;_product_attributes&#39;][0]));

And I&#39;m getting this raw data:

    [pa_koostis] =&gt; Array
            (
                [name] =&gt; pa_koostis
                [value] =&gt; 
                [position] =&gt; 0
                [is_visible] =&gt; 1
                [is_variation] =&gt; 0
                [is_taxonomy] =&gt; 1
            )

I know that there is a value because it is shown in the attribute section, but I just can&#39;t find a way to get it displayed with my custom code.

Get custom product attributes in Woocommerce

Imagine having 2 numpy arrays:

    &gt; A, A.shape = (n,p)
    &gt; B, B.shape = (p,p)

Typically p is a smaller number (p &lt;= 200), while n can be arbitrarily large.

I am doing the following:

    result = np.diag(A.dot(B).dot(A.T))

As you can see, I am keeping only the n diagonal entries, however there is an intermediate (n x n) array calculated from which only the diagonal entries are kept.

I wish for a function like diag_dot(), which only calculates the diagonal entries of the result and does not allocate the complete memory.

A result would be:

    &gt; result = diag_dot(A.dot(B), A.T)

Is there a premade functionality like this and can this be done efficiently without the need for allocating the intermediate (n x n) array?

Content Type	Original Author	Original Content on Stackoverflow
Question	Jens Schauder	View Question on Stackoverflow
Solution 1 - Eclipse	VonC	View Answer on Stackoverflow

What are the differences between plug-ins, features, and products in Eclipse RCP?

Eclipse Problem Overview

Eclipse Solutions

Solution 1 - Eclipse

How to sort alpha numeric set in python

Visual Studio - Is there a keyboard combination to select an entire line?

Attributions