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Value arrays

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

Synopsis


#include <glib-object.h>


            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

GValueArray

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

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`

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

g_value_array_free ()

void        g_value_array_free              (GValueArray *value_array);

Free a GValueArray including its contents.

value_array :

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.

`value_array` :	GValueArray to add an element to
`value` :	GValue to copy into GValueArray
Returns :	the GValueArray passed in as `value_array`

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.

`value_array` :	GValueArray to add an element to
`value` :	GValue to copy into GValueArray
Returns :	the GValueArray passed in as `value_array`

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.

`value_array` :	GValueArray to add an element to
`index_` :	insertion position, must be <= value_array->n_values
`value` :	GValue to copy into GValueArray
Returns :	the GValueArray passed in as `value_array`

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, must be < value_array->n_values
Returns :	the GValueArray passed in as `value_array`

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
Returns :	the GValueArray passed in as `value_array`

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.