Re: whats the purpose of quark

[Emmanuele Bassi <ebassi gmail com>]

On Thu, 2008-01-24 at 11:40 +0800, Binary Chen wrote:

> > > In glib there is a primitive named quark, it relates a ID with a
> > > string, but whats the advantage for this? Can we use a string instead,
> > > just to save some bytes for duplicated strings?
> > 
> > It has the same advantages as string interning in any other
> > language...
> 
> Can you give me an example for this?

static GQuark foo_quark = 0;
static const gchar *foo_str =
  "a-very-long-string-to-compare-many-times";

foo_quark = g_quark_from_static_string (foo_str);

quark = g_quark_try_string (some_str);
if (quark == foo_quark)
  g_print ("'%s' matches '%s'\n", some_str, foo_str);

this could also be done using g_intern_static_string() and
g_intern_string(), and then comparing the pointers.

ciao,
 Emmanuele.

-- 
Emmanuele Bassi,
W: http://www.emmanuelebassi.net
B: http://log.emmanuelebassi.net