Check if something is not between two numbers?
I just have an if statement and I need it to check if a certain Value is not between the numbers 60 to 80. Here is the block of code I need help with it's simple, just how do I make it check between these two numbers?
1 | if h.Health ~= 60,80 then |
2 | pg.Hurt.Red.ImageTransparency = 0.8 |
3 | end |
I end up with "expected 'then' got ','" Any help is appreciated :)
0
1 answer
A number is "between" 60 and 80 if it is greater than 60: 60 <= x and it is less than 80: x <= 80.
Thus,
1 | if 60 <= x and x <= 80 then |
2 | -- between |
3 | else |
4 | -- not between! |
5 | end |
You can use not to negate the whole thing:
1 | if not (60 <= x and x <= 80) then -- parenthesis matter! |
2 | -- not between! |
3 | else |
4 | -- between |
5 | end |
You can use De Morgan's law to get rid of the not. not (a and b) is (not a) or (not b). The not of a <= is > and the not of >= is < (flipping when the things are true):
1 | if 60 > x or x > 80 then |
2 | -- not between! |
3 | else |
4 | -- between |
5 | end |
"Flipping" the > to make them be in smallest to largest makes more sense:
1 | if x < 60 or 80 < x then |
2 | -- not between! |
That is, x is not between 60 and 80 if it is less than 60, OR it is greater than 80.