I’m a Christian and software engineer; I create random graphics projects and websites. Feel free to ask me for help with programming, or about my faith!

  • 1 Post
  • 21 Comments
Joined 1 year ago
Cake day: June 12th, 2023
  • KiranWells@pawb.socialtoProgramming@programming.dev•Fast memory vulnerabilities, written in 100% safe Rust
    14·
    8 months ago

    For anyone who is confused: This is exploiting an old soundness bug in the Rust compiler that is still present. The GitHub issue page has this comment from maintainers:

    we already had a crate published on crates.io before which used this bug to transmute in safe code, see #25860 (comment).

    this issue is a priority to fix for the types team and has been so for years now. there is a reason for why it is not yet fixed. fixing it relies on where-bounds on binders which are blocked on the next-generation trait solver. we are actively working on this and cannot fix the unsoundness before it’s done.

  • KiranWells@pawb.socialtoLinux@lemmy.ml•*Permanently Deleted*
    10·
    1 year ago

    My computer was taking too long to start up, which I interpreted as failing to boot, but in hindsight was probably just my hard drive being slow. So, I booted into recovery mode, and ran an update. At one point, apt said “there are unnecessary packages” and would I like to remove them? I figured that apt knew better than I did (after all, maybe a package dropped a dependency), so I said yes.

    It was after I noticed the very large number of packages that I suspected I messed up. Turns out, apt uninstalled the entire desktop environment, and network manager, so I had to boot into a USB drive with Network Manager installed, chroot into my main drive, and reinstall plasma. As a bonus, I think I missed the main group for the plasma desktop and only installed only most of it, so some of my extensions just didn’t work anymore.

  • KiranWells@pawb.socialtoProgrammer Humor@lemmy.ml•OuchEnglish
    30·
    1 year ago

    To be fair, I have seen many people confused by git (in fact, there is a relevant xkcd). So for you and anyone else that could use some help:

    Git is just a version tracker. It is basically like naming a files “project_1”, “project_2”, “project_final”, etc. It just does the hard work of remembering history for you, and only shows you the current version.

    The commands are somewhat oddly named, but are fairly intuitive:

    git add - adds some of the current changes to the tracker (“stages” them).

    git commit - commits (i.e. saves) the currently staged changes to a new point in your history (a ‘commit’)

    git checkout - check out, as in take a look at, another branch

    And you shouldn’t think about pushing and pulling as a tree; think about it as an action you take. You either pull changes in from the server or you push them up to the server.

    For more complex situations, you will need to use more complex functionality. Git is built to help manage changes when working on a team, so it has the concept of creating new branches of history - like an alternate timeline - so that each individual can work on their code as if they were working alone. When they are ready to send their changes to the main (or master) version, they can merge the changes in. In the event that you want to change history, there is git amend and git rebase.

    The normal work flow goes like this:

    • git checkout -b new-feature: check out a new brach, based on the one you are on now
    • make some changes
    • git add file.txt (or -A for all): add your changes to tracking
    • git commit: save the changes to a new commit (a new point in history). This will try to open an editor so you can write a short message explaining the changes; you can use -m "message" to specify a message from the command line if you prefer.
    • repeat until you are done working
    • git push: send your changes to the remote server (add --set-upstream origin new-feature if this is the first time for this branch)
    • open a pull request or something similar so someone else on the team can review and approve your code
    • merge the pull request in

    If your changes fall behind the main branch, you will need to update your branch before merging it in. First, checkout the main branch and pull the new changes. Then, checkout your branch and add the changes from main. There are two ways of doing this:

    git merge main - merge the changes you are missing from main, creating a new point in history for the combined changes

    git rebase main - change history so that it is as if your changes started from where main is now - change the base of your branch to be the current state of main.

    If there are conflicts, stay calm and take a look at your files. You should see something like this (from here:

    here is some content not affected by the conflict
<<<<<<< main
this is conflicted text from main
=======
this is conflicted text from feature branch
>>>>>>> feature branch

    You need to edit the file to decide which of main’s code and which of your branch’s code to use. Once you are done, run:

    git commit: if you are doing the merge method

    git rebase --continue: if you are rebasing. A rebase resolves conflicts one commit at a time, so you might be editing code from previous commits, and you might need to repeat this process for the rest of your commits until you get back up to now.

    Another tip: if git complains about uncommited changes, or if you just want to save all of your changes somewhere and go back to a clean slate, you can use git stash. This will create a local stash of your current changes, and allow you to get them back later with git stash apply or git stash pop.

    And you aren’t expected to remember it all. That’s what man git, Google, and websites like git.wtf are for. Or, you can call that one friend who understands it, and ask them for help ;)

  • KiranWells@pawb.socialtoFREEMEDIAHECKYEAH@lemmy.fmhy.ml•Anyone else still not understand how this works?
    1·
    1 year ago

    Just as a warning, you are on Kbin, which is a bit different from Lemmy. The two communicate just fine, but have different UIs and features. Lemmy generally has “communities” instead of “magazines”, but they work in mostly the same way.

    For Lemmy, generally going to the search menu in the UI allows you to search for communities, but not every one will come up (for example if the server you are on doesn’t know about another new server yet). If is often better to use a third-party website like browse.feddit.de to find new communities.

    Not sure how subscribing to them would work on Kbin, though.