On Wednesday, 22 June 2016 at 13:46:50 UTC, qznc wrote:
Walter and we as a community often claim that dmd is fast as in
"compiles quickly". Go also claims this. Rust does not. They
even state that compilation speed is one of the big tasks they
are working on.
From the general sentiment, I would expect that dmd performs on
the level of Go and Rust being slower.
Now, D as a language supports arbitrary compile-time
computation so dmd can be arbitrarily slow. We need to look at
the benchmark carefully. I started with the canonical Hello
World. Here are some numbers:
Dash 0:00:00.002366
Bash 0:00:00.002474
TCC 0:00:00.007044
Python2 0:00:00.009881
Python3 0:00:00.015547
GCC 0:00:00.028578
Go 0:00:00.149691
Rust 0:00:00.212053
RDMD 0:00:00.275884
Haskell 0:00:00.310539
DMD 0:00:00.311102
Java 0:00:00.596517
Scala 0:00:01.917606
X10 Java 0:00:02.484673
X10 C++ 0:00:03.887826
Hm, Rust is faster than dmd? Go is roughly twice as fast as dmd?
Destroy!
But run your own numbers first:
https://github.com/qznc/hello-benchmark ;)
You methodology is flawed. You are essentially measuring link
time against the standard lib.
