> On Thursday, 25 January 2018, 10:32:07 GMT, Yasushi SHOJI
<yasushi.sh...@gmail.com> wrote:
> void main () {
> Variant ary = new Variant.strv({"foo", "bar", "baz"});
> }
> In file included from /usr/include/glib-2.0/glib/gmessages.h:35:0,
> from /usr/include/glib-2.0/glib.h:62,
> from /tmp/a.vala.c:5:
> /usr/include/glib-2.0/glib/gvariant.h:118:33: note: expected ‘const
> gchar * const* {aka const char * const*}’ but argument is of type
> ‘gchar ** {aka char **}’
> GVariant * g_variant_new_strv
> (const gchar * const *strv,
You can use Vala's implicit conversion module to create a string array.I've
figured out how to do this for string arrays, not just basic types. Itdoesn't
produce the C warnings when compiling:
void main () { string[] my_array = {"foo", "bar", "baz"};
test (my_array);
Variant my_variant = my_array;
test (my_variant);
}
void test (Variant variant) {
print (@"$(variant.get_type_string ())\n");
print (@"$(variant.print (true))\n");
}
The implicit conversion is invoked when assigning the array to a variable of
type Variant. It is also invoked when passing the string array as an argumentto
a function that expects a Variant type parameter.
This also works for GLib HashTable, which is a dictionary over D-Bus. This
should be very useful for using DBusConnection. Code snippet:
var a = new HashTable of string, Variant ( str_hash, str_equal );
a.insert( "first", 1 );
a.insert( "second", "test" );
b:Variant = a;
A couple of references for anyone
interested:https://wiki.gnome.org/Projects/Vala/DBusServerSample#Type_Table
https://valadoc.org/gio-2.0/GLib.DBusConnection.html
All the best,
Al
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