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GHashTable: Clarify g_hash_table_lookup_extended docs

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Passing NULL as a key is only ok if your hash and equal functions
can deal with it.
https://bugzilla.gnome.org/show_bug.cgi?id=642944
This commit is contained in:
Matthias Clasen 2011-02-25 10:40:39 -05:00
parent 52ef73ac8c
commit d2d756439f
1 changed files with 6 additions and 4 deletions
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10
glib/ghash.c
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@ -283,12 +283,13 @@ g_hash_table_set_shift_from_size (GHashTable *hash_table, gint size)
/*
* g_hash_table_lookup_node:
* @hash_table: our #GHashTable
* @key: the key to lookup against
* @key: the key to lookup against (may be %NULL)
* @hash_return: optional key hash return location
* Return value: index of the described #GHashNode
*
* Performs a lookup in the hash table. Virtually all hash operations
* will use this function internally.
* Performs a lookup in the hash table.
*
* Virtually all hash operations will use this function internally.
*
* This function first computes the hash value of the key using the
* user's hash function.
@ -917,7 +918,8 @@ g_hash_table_lookup (GHashTable *hash_table,
* for example before calling g_hash_table_remove().
*
* You can actually pass %NULL for @lookup_key to test
* whether the %NULL key exists.
* whether the %NULL key exists, provided the hash and equal functions
* of @hash_table are %NULL-safe.
*
* Return value: %TRUE if the key was found in the #GHashTable.
**/