Functions are generally useful for using in a formula, variables are generally useful for using as a generic value.
Both constant functions and globals will inline (functions only if they follow the inline rules as outlined in the JassHelper Manual), so there's no performance difference.
The difference is that in constant variables, the user can change the value(say you posted your spell and someone else is using it) but not put in a formula. For example, if I type 5*level in a constant variable then there will be a compile error saying that level isn't initialized.
But in constant functions, you pass level as a parameter, so you can do 5*level. Ok, so someone else is using your spell, he wants to make the spell deal damage depending on the hero's kills. So he changes the formula to 5*level*kills instead.
Where to use what?
You can use functions when you need to get a value which depends on another value. Like damage, which depends on the level, so that you can pass level as a parameter.
You can use variables when that field will probably be constant and never change, like an animation path or the order string of the dummy spell.
Signatures can be edit in your account profile. As for the old stuffs, I'm thinking it's because Blizzard is now under Microsoft, and because of Microsoft Xbox going the way it is, it's dreadful.
@tom_mai78101 I must be blind. If I go on my profile I don't see any area to edit the signature; If I go to account details (settings) I don't see any signature area either.
You can get there if you click the bell icon (alerts) and choose preferences from the bottom, signature will be in the menu on the left there https://www.thehelper.net/account/preferences
I bought an Ender 3 during the pandemic and tinkered with it all the time. Just bought a Sovol, not as easy. I'm trying to make it use a different nozzle because I have a fuck ton of Volcanos, and they use what is basically a modified volcano that is just a smidge longer, and almost every part on this thing needs to be redone to make it work
So, 2.5mm longer. But the thing that measures the bed is about 1.5mm above the nozzle, so if I swap it with a volcano then I'm 1mm behind it. So cool, new bracket to swap that, but THEN the fan shroud to direct air at the part is ALSO going to be .5mm to low, and so I need to redo that, but by doing that it is a little bit off where it should be blowing and it's throwing it at the heating block instead of the part, and fuck man
I didn't realize they designed this entire thing to NOT be modded. I would have just got a fucking Bambu if I knew that, the whole point was I could fuck with this. And no one else makes shit for Sovol so I have to go through them, and they have... interesting pricing models. So I have a new extruder altogether that I'm taking apart and going to just design a whole new one to use my nozzles. Dumb design.
Can't just buy a new heatblock, you need to get a whole hotend - so block, heater cartridge, thermistor, heatbreak, and nozzle. And they put this fucking paste in there so I can't take the thermistor or cartridge out with any ease, that's 30 dollars. Or you can get the whole extrudor with the direct driver AND that heatblock for like 50, but you still can't get any of it to come apart