0x09 · HackerTrans

il y a 3 ansdiscuss

It's partly an artifact of BCPL where the only type was one representing the machine word. So with a word-sized type you don't get portability in the range of values the type can represent, but can portably know that you won't e.g. take up 2 registers by using it.

You might consider the int_fastN_t types a sort of spiritual successor to this with fewer downsides since they purposefully guarantee a minimum width.

0x09

il y a 3 ansdiscuss

>Can be macro'd at the function definition, but it's ugly.

I wonder if typeof in c23 has changed this at all. Previously there was no sense in defining an anonymous struct as a function's return type. You could do it, but those structs would not be compatible with anything. With typeof maybe that's no longer the case.

e.g. with clang 16 and gcc 13 at least this compiles with no warning and g() returns 3. But I'm not sure if this is intended by the standard or just happens to work.

    struct { int a; int b; } f() {
        return (typeof(f())){1,2};
    }
    int g() {
        typeof(f()) x = f();
        return x.a + x.b;
    }

edit: though I suppose this just pushes the problem onto callers, since every function that does this now has a distinct return type that can only be referenced using typeof(yourfn).

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il y a 3 ansdiscuss

I'm the author of the extension that the vtab and define function in that module were adapted from. It allows you to create something like a parameterized view, but the way it works is fairly simple: a prepared statement is created from the provided SQL on the same db connection as the vtab, and is executed each time the virtual table is queried. Parameters can be supplied as constraints (or using table valued function syntax) and the results of executing the statement are the row values.

Did you have any questions in particular?

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il y a 4 ansdiscuss

Doxygen has the ability to generate these with its CALL_GRAPH/CALLER_GRAPH config, at least from each function individually. It can look quite funny when the depth isn't limited: https://i.imgur.com/3LMV71N.png

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il y a 5 ansdiscuss

Something of an informal reverse engineering of SimCity 3000 existed in sc3000.com's Knowledge Neighborhood. The original site is only partially available via the wayback machine now, though fortunately the articles have been preserved albeit in a slightly less convenient format here https://community.simtropolis.com/profile/157989-catty-cb/co...

The site contained a pretty amazingly comprehensive detailing of the game's mechanics and various algorithms scattered throughout the articles, to the point where it seemed to me like it'd be possible to implement a lot of the game's engine using it.

Some good examples of the more detailed articles:

The economy https://community.simtropolis.com/omnibus/other-games/the-ec...

Land value specifics https://community.simtropolis.com/omnibus/other-games/land-v...

Traffic and transportation specifics https://community.simtropolis.com/omnibus/other-games/traffi...

Zone development rules https://community.simtropolis.com/omnibus/other-games/zone-d...

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il y a 6 ansdiscuss

Not about the language exactly, so maybe not fair game, but: how did you all find yourselves joining ISO? And maybe more generally, what's the path for someone like a regular old software engineer to come to participate in the standardization process for something as significant and ubiquitous as the C programming language?

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