Method

GLibSequencelookup_iter

Declaration

GSequenceIter*
g_sequence_lookup_iter (
  GSequence* seq,
  gpointer data,
  GSequenceIterCompareFunc iter_cmp,
  gpointer cmp_data
)

Description

Like g_sequence_lookup(), but uses a GSequenceIterCompareFunc instead of a GCompareDataFunc as the compare function.

iter_cmp is called with two iterators pointing into seq. It should return 0 if the iterators are equal, a negative value if the first iterator comes before the second, and a positive value if the second iterator comes before the first.

This function will fail if the data contained in the sequence is unsorted.

Available since:	2.28
This method is not directly available to language bindings.

Parameters

`data`	`gpointer`
	Data to look up.
	The argument can be `NULL`.
	The data is owned by the caller of the function.
`iter_cmp`	`GSequenceIterCompareFunc`
	The function used to compare iterators in the sequence.
`cmp_data`	`gpointer`
	User data passed to `iter_cmp`.
	The argument can be `NULL`.
	The data is owned by the caller of the function.

Return value

Returns:	`GSequenceIter`
	An `GSequenceIter` pointing to the position of the first item found equal to `data` according to `iter_cmp` and `cmp_data`, or `NULL` if no such item exists.
	The data is owned by the instance.
	The return value can be `NULL`.