Interesting numbers on the usage for Rust in Firefox from Nov 1st 2017 to Nov 1st 2018:
Rust usage by lines of code has gone up from 3.7% to 6.24%.
We now have a total of 405,379 lines of Rust vs 6,091,861 lines of C/C++.
More interestingly at this point the amount of Rust has increased by 172,839 lines of code vs 38,241 for C/C++. This is the cumulative amount of additions and removals over the last year. For a large part of the year C++ was trending down.
So at this point we've added 4.5X as much Rust as C/C++ over the past year! Note: this number is volatile as we tend to add large chunks of code on both sides (think WebRTC, WebRender, etc). Overall it looks like we're trending towards adding more Rust and removing more C++
How does this make you feel, Zig Forums?