Fri Apr 17 17:32:31 CEST 2009 Tobias Rautenkranz <tobias@rautenkranz.ch>

* C++ overload resolution

--- old-doc/introduction.docbook 2014-10-30 06:55:28.000000000 +0100

+++ new-doc/introduction.docbook 2014-10-30 06:55:29.000000000 +0100

@@ -25,8 +25,6 @@

<itemizedlist>

<listitem><para>Bad multithreaded performance

due to a lock for the global hash-tables.</para></listitem>

- <listitem><para>No C++ style argument conversion / overload resolution.</para></listitem>

- <listitem><para>No custom overloading methods by argument count.</para></listitem>

<listitem><para>Limited conversions. E.g. <code>QList&lt;T&gt;</code> is missing.

</para></listitem>

<listitem><para>10 seconds startup time (for <package>qt.examples</package>) on a

--- old-doc/smoke.docbook 2014-10-30 06:55:28.000000000 +0100

+++ new-doc/smoke.docbook 2014-10-30 06:55:29.000000000 +0100

@@ -24,7 +24,7 @@

(make-instance '<classname>qt:object</classname>)

</programlisting>

</informalexample>

-Suppy arguments as list to the <code>:args</code> keyword:

+Supply arguments as list to the <code>:args</code> keyword:

<informalexample>

<programlisting>

(let ((parent (make-instance '<classname>qt:object</classname>)))

@@ -54,6 +54,26 @@

<programlisting>(frob my-instance 1)</programlisting>

</informalexample>

</para>

+<section><title>Overload Resolution</title>

+<para>

+C++ style overload resolution with conversion sequences is under development,

+but already usable. For example this:

+<informalexample>

+<programlisting>

+(cxx:set-pen (make-instance '<classname>qt:painter</classname>)

+ (make-instance '<classname>qt:color</classname> :args '("green")))

+</programlisting>

+</informalexample>

+is equivalent to:

+<informalexample>

+<programlisting>

+(cxx:set-pen (make-instance '<classname>qt:painter</classname>) "green")

+</programlisting>

+</informalexample>

+In the second case a temporary <classname>qt:color</classname> instance is implicitly created.

+</para>

+</section>

+

<section><title>defmethod</title>

<para>

You can extend the <package>:cxx</package> generic functions by