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Joined 1 year ago
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Cake day: June 2nd, 2023

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  • I think it’s possible that the filesystem ran out of inodes, so even though there is space on disk, there is no space in the filesystem metadata to store new files.

    Now, I don’t know off the top of my head how to check this, but I assume the answer is on the internet somewhere (am on phone and can’t help much more than this, sorry)




  • if you’re using windows and expect any privacy at all […] throw that notion out the window

    Correct. And the same is true even if you are using linux, macOS, android, or a butterfly to manipulate bits to send a message through the internet.

    Because if your message ends up on the screen of a windows user, it’s also going to be eaten by AI.

    And forget the notion of “anything you post on the internet is forever”, this is also true for private and encrypted comms now. At least as long as they can be decrypted by your recipient, if they use windows.

    You want privacy and use linux? Well, that’s no longer enough. You now also need to make sure that none of your communications include a (current or future) windows user as they get spyware by default in their system.

    Well maybe not quite by default, yet



  • Reread the OP. They say:

    not on GNOME, because you have a panel at the top

    And

    when usign GTK apps on those [non-GNOME] desktops

    So you would not “access the controls above the app”, because having controls above the app is not covered by this scenario.

    The scenario is:

    1. You don’t have a top panel
    2. You have a maximized GTK app

    Which makes the close button be in the corner of the screen, but without actually extending to it.

    On topic: never knew this was a problem, guess I got spoiled by the Qt environment



  • ugo@feddit.ittoProgrammer Humor@lemmy.mlgot him
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    2 months ago

    Since my previous example didn’t really have return value, I am changing it slightly. So if I’m reading your suggestion of “rewriting that in 3 lines and a single nested scope followed by a single return”, I think you mean it like this?

    int retval = 0;
    
    // precondition checks:
    if (!p1) retval = -ERROR1;
    if (p2) retval = -ERROR2;
    if (!p3 && p4) retval = -ERROR3;
    
    // business logic:
    if (p1 && !p2 && (p3 || !p4))
    {
        retval = 42;
    }
    
    // or perhaps would you prefer the business logic check be like this?
    if (retval != -ERROR1 && retval != -ERROR2 && retval != -ERROR3)
    {
        retval = 42;
    }
    
    // or perhaps you'd split the business logic predicate like this? (Assuming the predicates only have a value of 0 or 1)
    int ok = p1;
    ok &= !p2;
    ok &= p3 || !p4;
    if (ok)
    {
        retval = 42;
    }
    
    return retval;
    

    as opposed to this?

    // precondition checks:
    if(!p1) return -ERROR1;
    if(p2) return -ERROR2;
    if(!p3 && p4) return -ERROR3;
    
    // business logic:
    return 42;
    

    Using a retval has the exact problem that you want to avoid: at the point where we do return retval, we have no idea how retval was manipulated, or if it was set multiple times by different branches. It’s mutable state inside the function, so any line from when the variable is defined to when return retval is hit must now be examined to know why retval has the value that it has.

    Not to mention that the business logic then needs to be guarded with some predicate, because we can’t early return. And if you need to add another precondition check, you need to add another (but inverted) predicate to the business logic check.

    You also mentioned resource leaks, and I find that a more compelling argument for having only a single return. Readability and understandability (both of which directly correlate to maintainability) are undeniably better with early returns. But if you hit an early return after you have allocated resources, you have a resource leak.

    Still, there are better solutions to the resource leak problem than to clobber your functions into an unreadable mess. Here’s a couple options I can think of.

    1. Don’t: allow early returns only before allocating resources via a code standard. Allows many of the benfits of early returns, but could be confusing due to using both early returns and a retval in the business logic
    2. If your language supports it, use RAII
    3. If your language supports it, use defer
    4. You can always write a cleanup function

    Example of option 1

    // precondition checks
    if(!p1) return -ERROR1;
    if(p2) return -ERROR2;
    if(!p3 && p4) return -ERROR3;
    
    void* pResource = allocResource();
    int retval = 0;
    
    // ...
    // some business logic, no return allowed
    // ...
    
    freeResource(pResource);
    return retval; // no leaks
    

    Example of option 2

    // same precondition checks with early returns, won't repeat them for brevity
    
    auto Resource = allocResource();
    
    // ...
    // some business logic, return allowed, the destructor of Resource will be called when it goes out of scope, freeing the resources. No leaks
    // ...
    
    return 42;
    

    Example of option 3

    // precondition checks
    
    void* pResource = allocResource();
    defer freeResource(pResource);
    
    // ...
    // some business logic, return allowed, deferred statements will be executed before return. No leaks
    // ...
    
    return 42;
    

    Example of option 4

    int freeAndReturn(void* pResource, const int retval)
    {
        freeResource(pResource);
        return retval;
    }
    
    int doWork()
    {
        // precondition checks
    
        void* pResource = allocResource();
    
        // ...
        // some business logic, return allowed only in the same form as the following line
        // ...
    
        return freeAndReturn(pResource, 42);
    }
    

  • ugo@feddit.ittoProgrammer Humor@lemmy.mlgot him
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    2 months ago

    Bad advice. Early return is way easier to parse and comprehend.

    if (p1)
    {
        if(!p2)
        {
            if(p3 || !p4)
            {
                *pOut = 10;
            }
        }
    }
    

    vs

    if(!p1) return;
    if(p2) return;
    if(!p3 && p4) return;
    
    *pOut = 10;
    

    Early out makes the error conditions explicit, which is what one is interested in 90% of the time. After the last if you know that all of the above conditions are false, so you don’t need to keep them in your head.

    And this is just a silly example with 3 predicates, imagine how a full function with lots of state looks. You would need to keep the entire decision tree in your head at all times. That’s the opposite of maintainable.


  • The “or later” is optional, the FSF specifically doesn’t have the power to update the terms of every GPL-licensed software because the wrote the clause in such a way that they don’t.

    If I give you software licensed under the GPL3, and a GPL3.1 comes out, it doesn’t apply to your copy of the software. Likewise the copyright holder of the work is also not forced to relicense their software under the GPL3.1. And even if they did, copies of the software distributed under the GPL3 would still be licensed under the GPL3.

    The “or later” clause simply means that if I received a copy of a GPL3 software, I can redistribute it under the GPL3.1 if I so wish (where “I” in the previous sentence is everyone with a copy of the work, as the GPL gives everyone with a copy redistribution rights)



  • ugo@feddit.ittoLinux Gaming@lemmy.ml*Permanently Deleted*
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    7 months ago

    I don’t know how to help you directly, but you could write a script that turns vibration on, then sleeps for an appropriate amount of time, and loops indefinitely. This way even if vibration stops after a few seconds, the script will turn it back on immediately.

    As for vibration strength, I have no clue. SDL has controller APIs, maybe it’s able to control vibration intensity. In which case, one could write a CLI SDL-based program for this.



  • ugo@feddit.ittoLinux@lemmy.mlGamedev and linux
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    8 months ago

    In my somewhat limited but relevant experience, the amount of platform specific bugs is indeed that low. I mean, there’s of course a layer of platform-specific low level stuff which is highly subject to platform specific issues, but once you go above that layer and into game code proper, most bugs are just bugs.

    I didn’t fix 400 “Linux-only” bugs, but I did fix dozens of “seems Linux specific” and “only happened when at least one Linux client was connected” bugs, and a grand total of 2 were caused by platform differences. And of those two, zero were Linux specific. The platform difference in this case was about how different compilers optimise non-crashy types of UB.

    Of course, we don’t want UB at all so the fix is to remove it.


  • I was dining out once and ordered a spicy pizza. Had this tiny red chili pepper in the center, maybe the size of the tip of my pinky. I thought nothing of it and popped it whole in my mouth.

    I was sweating and crying for 10 minutes, 10/10 would do it again.

    Op’s description is legit mouth watering, and now I want a slow-cooked spicy stew with roasted whole chilies.