On Wednesday, 8 February 2017 at 18:27:57 UTC, Ilya Yaroshenko wrote:
1. Why your company uses  D?


We don't use D.

2. Does your company uses C/C++, Java, Scala, Go, Rust?

C/C++.  Currently exploring Rust.

3. If yes, what the reasons to do not use D instead?

* The powers that be in my company are the kind of C programmers that can't understand why anyone would want to use C++ (i.e. Electrical engineers that write software). Suggesting D would be an exercise in futility, unless I can create a notable project in D in my spare time that demonstrates its advantages and appeal to the masses. I tried to do this 2 years ago, but D failed me, primarily due to https://issues.dlang.org/show_bug.cgi?id=14758

* Our customers don't use D. Some of our products are libraries and tools that our customers use. It doesn't make sense to program them in D if our customers don't use D. Though, if D had a minimal runtime, we could write them in D and distribute them with bindings to other languages.

* For us, binary size efficiency and minimal runtime are important features. D is not pay-as-you-go; many heavy-weight features are opt-out instead of opt-in. In contrast Rust has "minimal runtime" as one of its pillars making it a much better alternative language choice for us than D.

2. Have you use one of the following Mir projects in production:

No

3. If Yes, can Mir community use your company's logo in a section "Used by" or similar.

N/A

4. Have you use one of the following Tamedia projects in your production:

No

5. What D misses to be commercially successful languages?

I believe D has the potential to bury all other emerging languages out there, but only if it drops its historical baggage. At the moment, I'm of the opinion that D will remain an obscure language until someone forks D and takes it in a different direction (unlikely), or the D Foundation decides to "reboot" and start working on D3 with a new, updated perspective (more unlikely).

6. Why many topnotch system projects use C programming language nowadays?

Which topnotch system projects?

* C is the lowest common denominator. All modern languages that I'm aware of can interface with C. If one wants to write a library for mass adoption, the best way to do so is to write it in C and create bindings for other languages. D could be a good substitute for this if it had a "minimal runtime" philosophy.

* C is a simple, efficient, and powerful language. Some equate language complexity and heavy runtimes to bloat and inefficiency. Some see too much language complexity as an impediment to productivity. C creates the appearance of simplicity with efficiency.

* "Minimal Runtime" is the building block of systems programming. If this is not a core feature of a language, it will never compete with C. Systems programmers in my field need to incrementally opt-in to features in a pay-as-you-go fashion to make precise tradeoffs for their unique requirements and hardware platforms. Rust is the only modern language that I'm aware of that's getting this right.

* You may also be interested Dan Sak's recent talk "extern c: Talking to C Programmers about C++": https://www.youtube.com/watch?v=D7Sd8A6_fYU&t=2631s


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