Is there a better way of writing v = (v == 0 ? 1 : 0); [closed]

Answer 1

You could write a function for it and use it like:

v = inv(v)

Answer 2

If it must be the integer 1 or 0, then the way you're doing it is fine, though parentheses aren't needed. If these a are to be used as booleans, then you can just do:

v = !v;

Answer 3

define an array{1,0}, set v to v[v], therefore v with a value of 0 becomes 1, and vica versa.

Answer 4

Lines like v = 1 - v, or v ^= 1 or v= +!v will all get the job done, but they constitute what I would refer to as hacks. These are not beautiful lines of code, but cheap tricks to have the intended effect. 1 - v does not communicate "toggle the value between 0 and 1". This makes your code less expressive and introduces a place (albeit a small one) where another developer will have to parse your code.

Having instead a function like v = toggle(v) communicates the intent at the quickest glance.

Answer 5

v = (v + 1) % 2 and if you need to cycle through more values just change 2 for (n + 1). Say you need to cycle 0,1,2 just do v = (v + 1) % 3.

Answer 6

Another creative way of doing it, with v being equal to any value, will always return 0 or 1

v = !!v^1;