Alt text:
A screenshot from the linked article titled "Reflection in C++26", showing reflection as one of the bullet points listed in the "Core Language" section
this post was submitted on 24 Sep 2024
120 points (94.1% liked)
Programmer Humor
19563 readers
579 users here now
Welcome to Programmer Humor!
This is a place where you can post jokes, memes, humor, etc. related to programming!
For sharing awful code theres also Programming Horror.
Rules
- Keep content in english
- No advertisements
- Posts must be related to programming or programmer topics
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
There's a pretty big difference though. To my understanding enable_if happens at compile time, while reflection typically happens at runtime. Using the latter would cause a pretty big performance impact over a (large) list of data.
C++26 reflection is compiletime
Wouldn't compilers be able to optimize runtime things out? I know that GCC does so for some basic RTTI things, when types are known at compile time.
For runtime reflection, no, you'd specifically be able to do things that would be impossible to optimize out.
But the proposal is actually for static (i.e. compile-time) reflection anyway, so the original performance claim is wrong.
Yeah, that's what I was thinking of. I don't know how C++ could reasonably have Java-like reflections anyway...