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Add a note regarding inefficiency of repeated appends. (#166271, Olivier

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2005-02-04  Matthias Clasen  <mclasen@redhat.com>

	* glib/tmpl/linked_lists_double.sgml:
	* glib/tmpl/linked_lists_single.sgml: Add a note
	regarding inefficiency of repeated appends. (#166271,
	Olivier Sessink)
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Matthias Clasen 2005-02-05 03:12:06 +00:00 committed by Matthias Clasen
parent 1adf109e5d
commit 161e54209e
3 changed files with 33 additions and 15 deletions
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7
docs/reference/ChangeLog
View File

@ -1,3 +1,10 @@
2005-02-04 Matthias Clasen <mclasen@redhat.com>
* glib/tmpl/linked_lists_double.sgml:
* glib/tmpl/linked_lists_single.sgml: Add a note
regarding inefficiency of repeated appends. (#166271,
Olivier Sessink)
2005-02-03 Matthias Clasen <mclasen@redhat.com>
* glib/tmpl/quarks.sgml: Add a warning against

21
docs/reference/glib/tmpl/linked_lists_double.sgml
View File

@ -67,16 +67,13 @@ To free the entire list, use g_list_free().
<!-- ##### STRUCT GList ##### -->
<para>
The #GList struct is used for each element in a doubly-linked list.
The <structfield>data</structfield> field holds the element's data, which can
be a pointer to any kind of data, or any integer value using the
<link linkend="glib-Type-Conversion-Macros">Type Conversion Macros</link>.
The <structfield>next</structfield> and <structfield>prev</structfield>
pointers are the links to the next and previous elements in the list.
</para>
@data:
@next:
@prev:
@data: holds the element's data, which can be a pointer to any kind of data,
or any integer value using the
<link linkend="glib-Type-Conversion-Macros">Type Conversion Macros</link>.
@next: contains the link to the next element in the list.
@prev: contains the link to the previous element in the list.
<!-- ##### FUNCTION g_list_append ##### -->
<para>
@ -88,6 +85,14 @@ The return value is the new start of the list, which may have changed, so
make sure you store the new value.
</para>
</note>
<note>
<para>
Note that g_list_append() has to traverse the entire list to find the end,
which is inefficient when adding multiple elements. A common idiom to
avoid the inefficiency is to prepend the elements and reverse the list
when all elements have been added.
</para>
</note>
<informalexample><programlisting>
/* Notice that these are initialized to the empty list. */
GList *list = NULL, *number_list = NULL;

20
docs/reference/glib/tmpl/linked_lists_single.sgml
View File

@ -67,15 +67,13 @@ To free the entire list, use g_slist_free().
<!-- ##### STRUCT GSList ##### -->
<para>
The #GSList struct is used for each element in the singly-linked list.
The <structfield>data</structfield> field holds the element's data, which can
be a pointer to any kind of data, or any integer value using the
<link linkend="glib-Type-Conversion-Macros">Type Conversion Macros</link>.
The <structfield>next</structfield> field contains the link to the next
element in the list.
</para>
@data:
@next:
@data: holds the element's data, which can be a pointer to any kind of data,
or any integer value using the
<link linkend="glib-Type-Conversion-Macros">Type Conversion Macros</link>.
@next: contains the link to the next element in the list.
<!-- ##### FUNCTION g_slist_alloc ##### -->
<para>
@ -97,6 +95,14 @@ The return value is the new start of the list, which may have changed, so
make sure you store the new value.
</para>
</note>
<note>
<para>
Note that g_slist_append() has to traverse the entire list to find the end,
which is inefficient when adding multiple elements. A common idiom to
avoid the inefficiency is to prepend the elements and reverse the list
when all elements have been added.
</para>
</note>
<informalexample><programlisting>
/* Notice that these are initialized to the empty list. */
GSList *list = NULL, *number_list = NULL;