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# ceramic
  • f
    like many things, saving is one of those things that works differently between platforms
  • f
    like on Windows, it might use files in a specific folder in AppData
  • f
    while on Web, it uses localStorage
  • f
    Files, however, is more specific
  • f
    > Filesystem-related utilities. Only work on sys targets and/or nodejs depending on the methods
  • g
    yea im fine with it only working on native platforms
  • g
    how would you use persistentData though, the functions look different
  • f
    it's simple JSON
  • f
    you create a new PersistentData with an ID
  • f
    the ID could be something like "file1", "file2", "settings", "achievements"
  • f
    you use "set" to store a key-value pair and "get" to get the value for a given key
  • f
    and "save" to make it actually write
  • g
    ah ok, it automatically manages the file location?
  • g
    that was the main part i didnt understand
  • g
    ill have to look into later though, not on my computer rn
  • b
    Again, saving data deserve a guide article in itself 😅. But yea @faint-toothbrush-51643 is right, PersistentData is the most straightforward way to save data in Ceramic apps that works on every platform
  • b
    If you only need to save a few strings that's the way to go
  • b
    For more advanced things there are other options but this will need a real guide as there are a lot of things involved
  • f
    How can I get ceramic to change compilation flags? I need to add 
    -xml
    because I need the XML file for a project
  • g
    isnt there an hxml file?
  • b
  • f
    i need this thing > HaxeUmlGen uses the xml file created when the -xml flag is passed in to the haxe compiler.
  • f
    @billowy-waiter-28954 sorry to pester but i have a thing due like tomorrow. how can i make ceramic generate the XML file as needed by this thing? https://github.com/ianxm/haxeumlgen
  • a
    he linked you to the page on where to learn how to send flags to the generated .hxml
  • a
    what's the issue?
  • a
    going through the readme, it looks like you don't even both with ceramic at all
  • f
    ?
  • a
    oh nvm
  • a
    anyway, yeah what's the issue you had with the docs
  • a
    they're pretty clear?
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