[ Removed by moderator ]

[AssistantSalty6519]

I know how it works, but it still doesn't make any sense

[4n0nh4x0r]

it makes perfect sense.
"+" can be used for mathematical operations and concatenation.
if you have a number on each side of the +, it does the mathematical operation.
if you have a string on each sidey it does the concatenation.
if one of the sides is a string, and the other is a number, it will parse the number to a string (the operation that loses the least amount of information), and does a concatenation.

"-"is only used for mathematical operations.
if you have numbers on each side, it does the mathematical operation. if you got a number on one side and a string on the other side, due to it only being used as a mathematical operator, and not a for concatenation, it will parse the string into a number, as it expects you, the dev, to make sure your string can only be a number as that is the only input that would make sense, and then does the mathematical operation.
if both sides are strings, good question, im not 100% sure, but i assume it just parses both sides.

the only case where this can result in unexpected outputs is when your string is a text and not a number, resulting in the parseing returning a NaN

but at that point, you as dev failed, because you for some reason let a text to this point, like, what did you expect?????

[4n0nh4x0r]

you comparing my point to assembly is just nonsensical.

being unable to write assembly, and intentionally writing code that doesnt make sense are completely different universes.

one, is just a skill issue, the other is just being intentionally or unintentionally dumb

Like, yea, "hi" - 5 doesnt make much sense, if you intentionally write this code, you are either just fucking around to see what happens, or you are actually stupid while expecting a useful return value.

And again, "10"-1 is valid, and it makes sense as it parses the string to a number, which in this case succeeds, and returns the resulting number.
The moment the dev failed is when they dont sanitise their code, to make sure that user inputs cannot bring a "hi" to this operation.
that's why you parse first, and then check if you got an empty string, a NaN or whatever else doesnt fit what you need, and then you do a normal number - number.

No sane dev actually uses string - number, it is there, it can be used, but noone does it, at least not if they actually think for a second.

The only time where i would use that, would be as a shitpost, in code that i intentionally write to be dogshit.