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author | Bastian Ilsø <bastianilso@gnome.org> | 2015-05-02 19:51:46 +0200 |
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committer | Matthias Clasen <mclasen@redhat.com> | 2016-04-11 23:28:46 -0400 |
commit | 985ae37d198bef5bf386416a46f944d9952940be (patch) | |
tree | c8e7dc80bbc5f9554c9129e2bbdabf089f44c6c4 | |
parent | fcaa3fb1891af959bafcdc2541f7e637d7eb079c (diff) | |
download | glib-985ae37d198bef5bf386416a46f944d9952940be.tar.gz |
gvariant.c: Elaborate on GVariant concept and its use
Inserts a paragraph in the start of the description
explaining briefly the concept of GVariant as a
variant datatypes using examples and explaining
a few use cases where GVariant can be useful.
https://bugzilla.gnome.org/show_bug.cgi?id=748806
-rw-r--r-- | glib/gvariant.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/glib/gvariant.c b/glib/gvariant.c index 85bb1ca90..d28249139 100644 --- a/glib/gvariant.c +++ b/glib/gvariant.c @@ -40,10 +40,22 @@ * @short_description: strongly typed value datatype * @see_also: GVariantType * - * #GVariant is a variant datatype; it stores a value along with - * information about the type of that value. The range of possible - * values is determined by the type. The type system used by #GVariant - * is #GVariantType. + * #GVariant is a variant datatype; it can contain one or more values + * along with information about the type of the values. + * A GVariant can for example contain an array of two strings, an integer or a dictionary. + * This is useful for example when sending data via D-Bus, or when + * interacting with GSettings or GActions. + * When declaring a new GVariant, you parse the data you want to store in it + * along with a string representing the type of data you wish to parse to it. + * If you, for example, want to make a GVariant holding a string: + * |[<!-- language="C" --> + * g_variant_new('u','40'); + * ]| + * The string 'u' tells GVariant that the data parsed to it (40) is an integer. + * More advanced examples of #GVariant in use can be found in documentation for + * [GVariant format strings][gvariant-format-strings-pointers]. + * The range of possible values is determined by the type. + * The type system used by #GVariant is #GVariantType. * * #GVariant instances always have a type and a value (which are given * at construction time). The type and value of a #GVariant instance |