java
boolean isup = false;
isup = !isup // true
python
if判断会将0认为False,非0的认为是True
a = False
b = 1 - a # True
c = 1 - b # False
d = 1 - c # True
boolean isup = false;
isup = !isup // true
if判断会将0认为False,非0的认为是True
a = False
b = 1 - a # True
c = 1 - b # False
d = 1 - c # True