GLib

1. Gtk is based on glib that is near to "object-oriented" concepts and proposes utilities to manipulates complex datatypes such as lists, trees or maps (see documentation).

2. As a illustration, the code show a use of string datatype

GString* s = g_string_new("Welcome to ");
g_string_append(s,"ou !");
g_string_insert_c(s,11,'y');
g_string_overwrite(s,11,"You");
g_print(s->str);

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