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The C23 edition of Modern C

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397 points bwidlar | 3 comments | 15 Oct 24 16:06 UTC | HN request time: 0.001s | source
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belter ◴[15 Oct 24 17:30 UTC] No.41850897[source]▶
Important reminder just in the Preface :-)

Takeaway #1: "C and C++ are different: don’t mix them, and don’t mix them up"

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pjmlp ◴[15 Oct 24 17:35 UTC] No.41850960[source]▶
Specially relevant to all those folks that insist on "Coding C with a C++ compiler", instead of safer language constructs, and standard library alternatives provided by C++ during the last decades.
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com2kid ◴[15 Oct 24 17:48 UTC] No.41851082[source]▶
Perfectly valid to do if you need to interface with a large C code base and you just want to do some simple OO here and there. Especially if you cannot have runtime exceptions and the like.

This is how I managed to sneak C++ into an embedded C codebase. We even created some templates for data structures that supported static allocation at compile time.

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f1shy ◴[15 Oct 24 17:53 UTC] No.41851140[source]▶
What would be an example of "simple OO here and there" that cannot be done cleanly in plain C?
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1. com2kid ◴[15 Oct 24 23:57 UTC] No.41854294{4}[source]▶
You can do anything in C that you want to. Of course one can make v-tables and all of that, and even do inheritance.

But having the "class" keyword is nice. Having built in support for member functions is nice.

Sometimes a person just wants the simplicity of C++ 2003.

(In reality I was working on a project where our compiler only supported C++ 2003 and we had a UI library written in C++ 2003 and honestly pure C UI libraries kind of suck compared to just sprinkling in a bit of C++ sugar.)

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2. throwaway2037 ◴[16 Oct 24 03:14 UTC] No.41855255[source]▶

    > You can do anything in C that you want to.
How about destructors?
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3. com2kid ◴[16 Oct 24 08:20 UTC] No.41856788[source]▶
You can obviously build any runtime system you desire in C, including one that parses and executes C code with additional features added in. The wisdom of doing this is questionable.

Though I've actually seen macro systems that do things akin to destructors, although less automatically.