Two exclusive conditions along with one or condition for two values in switch statement

Question

Is there a way to do

switch (expr) {
case space or tab:
print 'one of em + '
case space:
print 'space'
case tab:
print 'tab'
}

Input	Output
tab	one of em + tab
space	one of em + space

If not, what are the alternatives? I know I could use if else but since I'm only using one expression as input, switch seems more appropriate

Answer 1

You cannot do this with a switch.

But with if it's really simple and readable:

if (expr == space || expr == tab)
  print 'one of em + '
if (expr == space)
  print 'space'
else if (expr == tab)
  print 'tab'

or better:

if (expr == space || expr == tab)
{
  print 'one of em + '
  if (expr == space)
    print 'space'
  else if (expr == tab)
    print 'tab'
}

or even better:

if (expr == space || expr == tab)
{
  print 'one of em + '
  if (expr == space)
    print 'space'
  else             // if (expr == tab) is not needed because
    print 'tab'    //  tab is the only possible outcome here.
}

All code above is pseudo code.