[Qt-interest] Initialize const Qt container class

[Constantin Makshin]

Ahh, sorry for the confusion... My bad.

On Monday 25 October 2010 23:01:09 Constantin Makshin wrote:
> Insertion is modification. And you can't modify a const object.
> 
> On Monday 25 October 2010 19:57:30 Julien Cugnière wrote:
> > 2010/10/25 Joshua Grauman <jnfo-c at grauman.com>
> > >
> > > Here's what I'd like to do (with standard c types):
> > >
> > > struct item
> > > {
> > >   char string[20];
> > >   int list[10];
> > > };
> > >
> > > //the following is nice and readable, easy to modify, etc.
> > > const struct item items[4] = {
> > > {"string1",{1,2,3,5,6,0}},
> > > {"string2",{4,0}},
> > > {"string3",{2,5,0}},
> > > {"",{0}}
> > > };
> > >
> > > This makes it very easy to read and change my data initialization. But I'd
> > > like to do this with Qt classes (QString and QList<int>) instead.
> > 
> > Most Qt containers have an insertion operator, similar to streams :
> > 
> > const QList<int> list = QList<int>() << 1 << 2 << 15 << 3 << 7;
> > 
> > For complex types it's a bit harder, but still possible :
> > 
> > struct Item {
> >     Item(QString string, QList<int> list) : string(string), list(list) {}
> >     QString string;
> >     QList<int> list;
> > };
> > 
> > const QList<Item> items = QList<Item>()
> >     << Item("string1", QList<int>() << 1 << 2 << 3 << 5 << 6)
> >     << Item("string2", QList<int>() << 4)
> >     << Item("string3", QList<int>() << 2 << 5);
> > 
> > --
> > Julien Cugnière