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Regex using Vala and GLib


Regex using Vala and GLib

By : RyanRulingRama
Date : November 21 2020, 07:31 AM
this one helps. First, lets take a look at some of the context around that quote you cited, with emphasis added:
code :
private static int main (string[] args) {
    string contents;
    GLib.Regex exp = /\<key\>([a-zA-Z0-9]+)\<\/key\>[\n\t ]*\<string\>([a-zA-Z0-9\.]+)\<\/string\>/;

    assert (args.length > 1);
    try {
        GLib.FileUtils.get_contents (args[1], out contents, null);
    } catch (GLib.Error e) {
        GLib.error ("Unable to read file: %s", e.message);
    }

    try {
        GLib.MatchInfo mi;
        for (exp.match (contents, 0, out mi) ; mi.matches () ; mi.next ()) {
            GLib.message ("%s: %s", mi.fetch (1), mi.fetch (2));
        }
    } catch (GLib.Error e) {
        GLib.error ("Regex failed: %s", e.message);
    }

    return 0;
}


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Using sqlite from vala without dependence on glib

Using sqlite from vala without dependence on glib


By : user2062214
Date : March 29 2020, 07:55 AM
this will help That should be fairly simple to solve, and I can imagine several solutions.
It boils down to declaring a different delegate void DestroyNotify (void* data) (either in the posix.vapi or sqlite3.vapi) and bind free() in posix.vapi.
vala: manipulating (gstreamer) GLib.Value

vala: manipulating (gstreamer) GLib.Value


By : Paul Carissimo
Date : March 29 2020, 07:55 AM
Hope that helps Vala makes working with GLib.Value very easy, it will implicitly convert between GLib.Value and the native types. Throwing GLib.StringBuilder into the mix to build your array, something like this (untested) should do the trick:
code :
GLib.StringBuilder s = new GLib.StringBuilder ();

s.append (((uint64) st).to_string ());
s.append (",[");
{
  bool first = true;
  foreach ( unowned GLib.Value value in rms.values ) {
    if (!first) {
      s.append_c (',');
    } else {
      first = false;
    }
    s.append (((double) value).to_string ());
  }
}
s.append_c (']');
How do I add to a GLib.List from different Thread in Vala

How do I add to a GLib.List from different Thread in Vala


By : ait kacem issam
Date : March 29 2020, 07:55 AM
I hope this helps . to apmasell pointing out the thing not working is actually GLib.List I took a look at the C source code.
He's right: The append method modifies the pointer - but only (!) if the GLib.List is empty!
How to pipe to a process using vala/glib

How to pipe to a process using vala/glib


By : Leonardo Nogueira
Date : March 29 2020, 07:55 AM
will help you The problem is that you are providing shell syntax to what is essentially the kernel’s exec() syscall. The shell pipe operator redirects the stdout of one process to the stdin of the next. To implement that using Vala, you need to get the file descriptor for the stdin of the command process which you’re running, and write some_var to it manually.
About GLib.Idle on Vala

About GLib.Idle on Vala


By : user2881572
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , When in doubt refer to the C documentation:
https://developer.gnome.org/glib/stable/glib-The-Main-Event-Loop.html#g-idle-add
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