Qt, range-based for loops and structured bindings | Hacker News Reader

Qt, range-based for loops and structured bindings

kdab.com

60 pointsjcelerier22 comments

At my previous job I created wrappers around QSqlQuery that don't work with string keys in operator[] and instead used template argument pack decomposition. So given a function

  DbResultIterator<int, QString> getUserNames()

I could do something like this:

  for(auto [id, name] : db.getUserIdsAndNames()) {
       // id and name are type-safe int and QString
  }
  vector<QString> v;
  ranges::transform(db.getUserIdsAndNames(), [](int id, const QString& name) {
      return name.toUpper()
  }, back_inserter(v));

Internally the iterator would wrap QSqlResult and decompose the template argument pack, calling specialized functions such as

  result.data(0).toString()

knowing the index and type due to the definition of DbResultIterator<...>.

Unfortunately I cannot share the code here because of copyright, but I can recommend it.

These issues have not been a problem for me, converting 500KLOC codebase with lots of STL from Win32 to Qt.

This site immediately popped up the worst cookies prompt I've seen in my life. Couldn't even read what the green buttons said without straining my eyes so I just closed the dab.

Aside from the readability of the buttons (which didn't seem particularly bad to me) it was actually an excellent prompt compared to what we usually get - I could choose only necessary cookies with a single button and no delay!

Yeah, and the three buttons are the same size and color, too. Often there is a light grey "save preferences" link that saves the mandated minimal cookies preset and continues, and a big, brightly colored "continue with all cookies" button that tries very hard to look like the button you're supposed to press to continue.

(I used to work for KDAB until three years ago. I noticed the good cookies dialog yesterday.)

Use Firefox reader mode to save the web

Haha, I usually only remember to use it when sites have a terrible design and not to get around the cookie crap. Thanks for the reminder.

same here, despite knowing who kdab are and enjoying their articles in the past!

Serves you right for trusting random websites to execute javascript in your browser. Javascript is a privilege, not an automatic right.

I visit webpages with NoScript in incognito mode under a separate unix user account that I only use to visit webpages.

But since GDPR many webpages do not work, since they have a consent dialog that can only be confirmed with javascript. It is very annoying

I'm using the "I don't care about cookies" Firefox plugin and didn't notice a thing. Frankly, the GDPR is such a shit-show it's the only way I can use the web now.

The industry response to GDPR is continually fascinating.

The idea of the GDPR was, presumably, to suggest that publishers and other industry actors might like to change their ways. If they were to keep doing what they had been doing, in terms of personal data collection and sharing, it would require such specific and explicit opt-ins for every single reader that no publisher would think it was a worthwhile tradeoff any more.

But the choice of the publishers has been to do that - to place those specific and explicit opt-ins in front of their readers, to offload to their readers the hard work of changing their ways instead of changing them themselves.

Personally I'm amazed that there still are so many websites with opt-out policies, which are illegal according to GDPR.

They love to repeat the crap about how gdpr fines are in the millions while making sure to barely "comply" with the law. Or just pretend to comply at least.

Just remember that following the letter and not the spirit of the law usually only flies in the US

Report offenders to ankle-biters like https://noyb.eu

Yes! This never gets any attention, but I can't see why.

We also never talk about the GDPR's general enforcement history.

Surprised and fascinated by the response here. Without this plugin, every website I visit pops up a giant banner that has to be dismissed before I can simply read some text. Why is this a good thing, it completely killed usability of the web for me.

Cookies are a built-in feature of web browsers, if you don't want them you can disable them or periodically flush them, otherwise yes, I want to automatically ignore this problem. I don't see why killing web usability was overall a good thing, even if it brought this tracking problem to the forefront, it certainly isn't fixing it, it's only making the web harder and more annoying to use.

GDPR may be well intentioned but what happened to the web as a result was a total failure imho.

I disagree. The fact that so many websites choose to be non-compliant is a big flashing signal that I don’t want to be on the site anyway, because they do not care about my privacy.

Especially the sites that have notices like “We value your privacy... so here’s 50 third parties we share your data with that you have to individually opt out from”. If they truly valued my privacy, they wouldn’t be sharing my data with so many third parties in the first place. They wouldn’t need to tell me and let me opt out.

Before GDPR, I’d have to read privacy policies to find out who doesn’t value my privacy, but now, after GDPR, the websites tell me with an in-your-face banner so I know to close the tab.

Cookie notices predate GDPR by about a decade and are related to the "Cookie Directive" What GDPR did is require more details about data usage.

Anyways: Website operators could easily avoid it and not invade users privacy. I doubt for a consulting companynlike KDAB there really is need for it. It's just a "default" feature of web sites to report all sorts of usage data to adtech companies.

GDPR is the shit-show? How about the complete tool that designed that thing or chose to use it?

Deliberately butcher your own site rather than respecting you users?

Don't use plugins to avoid this. Avoid the sites that do this.

This seems to be a recommendation to avoid 90%+ of websites. Sorry, not gonna happen.

90% of sites don't have any value anyway. There is a huge overlap between those and those that don't respect GDPR.

It is a reasonable price to pay to make the web habitable.

Edit: and if you are desperate, sure visit the site anyway. But the inconvenience of those popups is a feature - to remind you what the people behind the site really think of you.

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