Which minor offences? I've been under the impression that offences punishable by caning are quite severe: robbery, rape, assault, piracy (in the actual piratical sense of violent robbery at sea) and the like.
Vandalism, drug abuse, illegal money-lending, 'rioting' as defined by a government that doesn't tolerate assembly..
https://en.wikipedia.org/wiki/Caning_in_Singapore#Offences_p...
There's also the problematic government support of corporal punishment for children..
The point being, you won't be caned for small things that you could do out of a little negligence or thoughtlessness. You have to understand that you're doing something serious. (At least that has fit the description of all cases that I have read about.)
There might have been implicit government support in the past, but today teachers are not allowed to hand out corporal punishment to children.
I don't say caning is right for that either, but these are not "minor" offences. There's no fear that you could be caned for accidentally doing something like this.