alt Hacker NewsIMHO D just missed the mark with the GC in core. It was released in a time where a replacement for C++ was sorely needed, and it tried to position itself as that (obvious from the name).
But by including the GC/runtime it went into a category with C# and Java which are much better options if you're fine with shipping a runtime and GC. Eventually Go showed up to crowd out this space even further.
Meanwhile in the C/C++ replacement camp there was nothing credible until Rust showed up, and nowadays I think Zig is what D wanted to be with more momentum behind it.
Still kind of salty about the directions they took because we could have had a viable C++ alternative way earlier - I remember getting excited about the language a lifetime ago :D
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FIl-C, the new memory-safe C/C++ compiler actually achieved that through introducing a GC, with that in mind I'd say D was kind of a misunderstood prodigy in retrospect.
I'd rather say that the GC is the superpower of the language. It allows you to quickly prototype without focusing too much on performance, but it also allows you to come back to the exact same piece of code and rewrite it using malloc at any time. C# or Java don't have this, nor can they compile C code and seamlessly interoperate with it — but in D, this is effortless.
Furthermore, if you dig deeper, you'll find that D offers far greater control over its garbage collector than any other high-level language, to the point that you can eagerly free chunks of allocated memory, minimizing or eliminating garbage collector stops where it matters.