Databases
StackOverflow2013
Postsdbo
POReturning a pointer to an object ( C++ Templates ) Error
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POReturning a pointer to an object ( C++ Templates ) Error
    primarykey
    data
    text
    <p>I've been asked to switch three classes for a university assignment over to templates to make them more generic but I'm having problems when trying to return a pointer to an object from a template function.</p> <p>Compiler: GCC Version - 3.4.4 ( Cygwin )</p> <p>Here is the (.h):</p> <pre><code> namespace node_class { template &lt;class Item&gt; class node { public: // CONSTRUCTOR node(const Item&amp; initial_data = 0, node* initial_link = NULL); ~node(){} // MUTATING MEMBER FUNCTIONS void set_data(const Item&amp; new_data); void set_link(node* new_link); // NON-MUTATING MEMBER FUNCTIONS const node* link(void) const; node* link(void); const Item&amp; data(void) const; Item&amp; data(void); private: Item data_field; node* next_field; }; } </code></pre> <p>Here are the two function implementations for returning a pointer to an object:</p> <pre><code> template&lt;class Item&gt; const node&lt;Item&gt;::node* node&lt;Item&gt;::link(void) const { return(next_field); } template&lt;class Item&gt; node&lt;Item&gt;::node* node&lt;Item&gt;::link(void) { return(next_field); } </code></pre> <p>Here is the errors I keeps throwing when trying to compile:</p> <pre><code>$ g++ -Wall node.h node.h:73: error: expected init-declarator before '*' token node.h:73: error: expected ';' before '*' token node.h:79: error: expected constructor, destructor, or type conversion before '*' token node.h:79: error: expected ';' before '*' token </code></pre> <p>At the moment, I have a separate (.h) and (.template) with the .template being included by a include directive in the header file; But, I'm still getting these same error messages even when the implementation of the template functions is included in the (.h) like it's supposed to be.</p> <p>Any help would be great, thank you. </p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USurthwrm
    1. USurthwrm
    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
    1. VO
      singulars
      1. POReturning a pointer to an object ( C++ Templates ) Error
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POReturning a pointer to an object ( C++ Templates ) Error
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThere's also a solution for this problem present [here](http://stackoverflow.com/questions/8379667/returning-a-pointer-to-a-struct-defined-of-a-class-multiple-scope-operators)
      singulars
      1. POReturning a pointer to an object ( C++ Templates ) Error
      1. USDerek W
 

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