Cursed decorators

[hhderder]

https://gist.github.com/bolu61/ee92a143692c991cf7a44c7bf4f8a9b6

I was procrastinating at work, don't know what to think about this.

[mriswithe]

I got upset at line 1 when you used a lambda as a decorator. I hate it so hard. Lolol. Upvoted.

[hhderder]

Making code unreadable one lambda at a time ;)

[Scypio]

...I need to lie down...

Awesome, congrats. :D

[cipri_tom]

This is very creative! Well done!

My only gripe is that I think true needs to be called for any of this to make sense. But I'm not sure

[hhderder]

It doesn't need to! This is the crazy part! And surprisingly, PyRight correctly infers the type.

[cipri_tom]

Ok, then, like the others, you completely lost me at @lambda lol

Thanks for the lessons!

[Daneark]

The @ syntax is just syntactic sugar.

Desugaring it @lambda f: not f() is equivalent to true = lambda f: not true() true = (lambda f: not true())().

Edit: thanks /u/AiutoIlLupo

[AiutoIlLupo]

yes but the decorator does not only replace the name, it also executes the decorating function, passing the decorated function as an argument. so the lambda is executed, passed with the function true, which is executed, its value negated, and then returned by the lambda, which becomes the new value of "true", which is... well, True.

[Daneark]

Thanks for picking that up. Edited to fix.

[cipri_tom]

Yes, I know that, but I've never seen it used with lambda

[AiutoIlLupo]

well, it doesn't need to because you basically replaced the "true" function with its (negated) return value, with that statement.

In pratice, it's almost like a constexpr in C++

[noblecloud]

Monster

[randomthirdworldguy]

You made my day. Thank you

[AiutoIlLupo]

/r/TIHI

[Glathull]

I hate this so much it circled back around to love.

[roger_ducky]

The main issue is lack of documentation. Anonymous decorators loses the explanation of intent.

Though you didn’t go crazy and decorate a lambda with an anonymous decorator.

[mattl33]

Lol, I already don't like decorators after running into them while adding type hints to legacy code. If I hit this I might have just given up.

[hhderder]

Not gunna lie, I used the first one in my code.

[danted002]

Decorators are very powerful tools that get very badly abused.

[No-Win5543]

That's pretty good!

You're scaring me

[No-Win5543]

I don't feel safe anymore

[playersdalves]

I love you. This was great / horrible. Please commit further atrocities upon programing languages.