Value arrays

Value arrays — A container structure to maintain an array of generic values

Synopsis

#include <glib-object.h>

struct              GValueArray;
GValue *		          g_value_array_get_nth               (GValueArray *value_array,
                                                         guint index_);
GValueArray *	      g_value_array_new                   (guint n_prealloced);
GValueArray *	      g_value_array_copy                  (const GValueArray *value_array);
void                g_value_array_free                  (GValueArray *value_array);
GValueArray *	      g_value_array_append                (GValueArray *value_array,
                                                         const GValue *value);
GValueArray *	      g_value_array_prepend               (GValueArray *value_array,
                                                         const GValue *value);
GValueArray *	      g_value_array_insert                (GValueArray *value_array,
                                                         guint index_,
                                                         const GValue *value);
GValueArray *	      g_value_array_remove                (GValueArray *value_array,
                                                         guint index_);
GValueArray *	      g_value_array_sort                  (GValueArray *value_array,
                                                         GCompareFunc compare_func);
GValueArray *	      g_value_array_sort_with_data        (GValueArray *value_array,
                                                         GCompareDataFunc compare_func,
                                                         gpointer user_data);

Description

The prime purpose of a GValueArray is for it to be used as an object property that holds an array of values. A GValueArray wraps an array of GValue elements in order for it to be used as a boxed type through G_TYPE_VALUE_ARRAY.

Details

struct GValueArray

struct GValueArray {
  guint   n_values;
  GValue *values;
};

A GValueArray contains an array of GValue elements.

guint `n_values`;	number of values contained in the array
GValue *`values`;	array of values

g_value_array_get_nth ()

GValue *		          g_value_array_get_nth               (GValueArray *value_array,
                                                         guint index_);

Return a pointer to the value at index_ containd in value_array.

`value_array` :	GValueArray to get a value from
`index_` :	index of the value of interest
Returns :	pointer to a value at `index_` in `value_array`. [transfer none]

g_value_array_new ()

GValueArray *	      g_value_array_new                   (guint n_prealloced);

Allocate and initialize a new GValueArray, optionally preserve space for n_prealloced elements. New arrays always contain 0 elements, regardless of the value of n_prealloced.

`n_prealloced` :	number of values to preallocate space for
Returns :	a newly allocated GValueArray with 0 values

g_value_array_copy ()

GValueArray *	      g_value_array_copy                  (const GValueArray *value_array);

Construct an exact copy of a GValueArray by duplicating all its contents.

`value_array` :	GValueArray to copy
Returns :	Newly allocated copy of GValueArray. [transfer full]

g_value_array_free ()

void                g_value_array_free                  (GValueArray *value_array);

Free a GValueArray including its contents.

value_array :

GValueArray to free

g_value_array_append ()

GValueArray *	      g_value_array_append                (GValueArray *value_array,
                                                         const GValue *value);

Insert a copy of value as last element of value_array. If value is NULL, an uninitialized value is appended.

`value_array` :	GValueArray to add an element to
`value` :	GValue to copy into GValueArray, or `NULL`. [allow-none]
Returns :	the GValueArray passed in as `value_array`. [transfer none]

g_value_array_prepend ()

GValueArray *	      g_value_array_prepend               (GValueArray *value_array,
                                                         const GValue *value);

Insert a copy of value as first element of value_array. If value is NULL, an uninitialized value is prepended.

`value_array` :	GValueArray to add an element to
`value` :	GValue to copy into GValueArray, or `NULL`. [allow-none]
Returns :	the GValueArray passed in as `value_array`. [transfer none]

g_value_array_insert ()

GValueArray *	      g_value_array_insert                (GValueArray *value_array,
                                                         guint index_,
                                                         const GValue *value);

Insert a copy of value at specified position into value_array. If value is NULL, an uninitialized value is inserted.

`value_array` :	GValueArray to add an element to
`index_` :	insertion position, must be <= value_array->n_values
`value` :	GValue to copy into GValueArray, or `NULL`. [allow-none]
Returns :	the GValueArray passed in as `value_array`. [transfer none]

g_value_array_remove ()

GValueArray *	      g_value_array_remove                (GValueArray *value_array,
                                                         guint index_);

Remove the value at position index_ from value_array.

`value_array` :	GValueArray to remove an element from
`index_` :	position of value to remove, which must be less than `value_array->n_values`
Returns :	the GValueArray passed in as `value_array`. [transfer none]

g_value_array_sort ()

GValueArray *	      g_value_array_sort                  (GValueArray *value_array,
                                                         GCompareFunc compare_func);

Sort value_array using compare_func to compare the elements accoring to the semantics of GCompareFunc.

The current implementation uses Quick-Sort as sorting algorithm.

`value_array` :	GValueArray to sort
`compare_func` :	function to compare elements. [scope call]
Returns :	the GValueArray passed in as `value_array`. [transfer none]

g_value_array_sort_with_data ()

GValueArray *	      g_value_array_sort_with_data        (GValueArray *value_array,
                                                         GCompareDataFunc compare_func,
                                                         gpointer user_data);

Sort value_array using compare_func to compare the elements accoring to the semantics of GCompareDataFunc.