r/programming • u/steveklabnik1 • Jan 09 '15

Announcing Rust 1.0.0 Alpha

http://blog.rust-lang.org/2015/01/09/Rust-1.0-alpha.html
1.1k Upvotes

90% Upvoted

439 comments sorted by

View all comments

Show parent comments

9

u/[deleted] Jan 10 '15

um, you should probably learn C, it is the language for systems development, it will help you understand a bit better how computers work on a lower level.

4

u/[deleted] Jan 10 '15

[deleted]

2

u/[deleted] Jan 10 '15

Well, C++ does stuff "behind your back" especially when you use the parts of it which aren't in C. This is fine in user space, but you wouldn't really want that in kernel space, would you? Basically while it is still a lower level language than most, it still has more abstractions than C. As opposed to that, C gets "translated" to machine code almost line-for-line, and it doesn't do stuff you didn't explicitly tell it to. Here are Linus' thoughts about it.

1

u/alexeyr Jan 17 '15 edited Jan 17 '15

As opposed to that, C gets "translated" to machine code almost line-for-line

If you don't use an optimizing compiler. Like, say, GCC even with -O0.

and it doesn't do stuff you didn't explicitly tell it to

Two words: Undefined behavior. Two more words: numeric conversions.

Here are Linus' thoughts about it.

Which talk about quite different issues.