Detect months with 31 days

Question

Is there an analogous form of the following code:

if(month == 4,6,9,11)
{
  do something;
}

Or must it be:

if(month == 4 ||         


        

Answer 1

For pretty much any you'll need to use the second option, but in most languages you can write something similar to

if [4,6,9,11].map{|day|==month}.inject(false){|all, elem| all|elem}
    do thing

or better yet

if month in [4,6,9,11]:
    do thing