[abalaji]

this blog post will be a great barometer of commenters who read the post vs those who don't

[jeffbee]

THUITFHNGL

Fortunately almost all the functional features in the article, like range folds and negation wrappers, do exist.

[mindcrime]

> THUITFHNGL

Tragic Harvest Underwrites Infrastructure That Frobs Haptic Network Generation Load?

[slater]

When in doubt, UD it:

https://www.urbandictionary.com/define.php?term=THUITFHNGL

[mindcrime]

Oh I did. I just couldn't resist the temptation to have some fun with it. :-)

[scubbo]

Can you help me out with an expansion of "TFA", when used to refer to the original post in comments? I simply don't believe that every commenter is using it to mean "The Fucking Article" in comments that are otherwise devoid of aggression or profanity.

[mindcrime]

I can't speak for anybody else, but when I see "TFA" I do indeed translate it as "The Fucking Article". But if it makes you feel better you can think of it as "The Friggin' Article" or "The Fine Article" or something else less profane.

[forrestthewoods]

I skimmed the post. I have absolutely no idea what std::flip is supposed to do. All the sample code looks awful and undesirable. And that’s coming from someone who writes C++ every day. Yes I read the plot twist at the end, made me lol.

[OskarS]

You write C++ every day, and you didn’t understand the is_descendant_of/is_ancestor_of example? Or how you can use it to reverse a relation like std::less?

[forrestthewoods]

I don’t understand why I should care about this. It doesn’t appear to solve real problems. The examples are all dumb toys and simply writing a wrapper by hand is perfectly fine and easier to read.

[Jtsummers]

It's as useful (or not) as you find this:

https://cppreference.com/w/cpp/utility/functional/not_fn.htm...

If you don't see any value in that, you wouldn't see any value in the similar `flip` function or other combinators.

[forrestthewoods]

So not useful. Got it.

[loeg]

> I have absolutely no idea what std::flip is supposed to do.

Just reverse parameter order. It seems very silly.

  void f(int, double);

  void main() {
    flip(f)(3.14, 1);
  }

[gblargg]

You do realize it's not meant for silly situations like that, right?

[loeg]

I cannot imagine a not-silly situation where it would be used.

[omoikane]

If I have a library that let me curry trailing arguments for a function, then I can see how something like std::flip() could be useful in letting me curry different arguments without costing extra lines of code. The library I had in mind is Google's RPC callbacks:

https://github.com/protocolbuffers/protobuf/blob/main/src/go...

This library was written in the C++98 era. It might seem silly now because with C++11, we could use std::bind or lambda expressions instead.

[forrestthewoods]

I am insufficiently clever to imagine a non-silly situation in which it is useful. If authors only present silly use cases then I am inclined to suspect their creations are only useful in silly cases. If it were useful in solving real problems they should show that as an example!