interp_syntax_sugar.c

int, double (ret_int, ret_double) my_foo(a,  b, c):
  if specified a:
    print "a"
  if specified b:
    print "b"
  if specified c:
    print "c"
  if is_requested ret_int:
    print "int on return requested"
  if is_requested ret_double:
    print "double on return requested"
    
  return 1, 2.0

_, ret_double = my_foo(1, _, 3):
# Returns:
# a
# c
# double on return requested

Esim. Olkoon:

double, double (r1, r2) GetStatistics(List of ints L):
    mean = Null
    if is_requested r1:
        mean = Mean(L)
    else 
        return _, _ # No mean, no standard deviation
        
    if is_requested r2:
        return mean, StandardDeviation(L, mean) # Return both mean and standard deviation.
    
     return mean, _ # No standard deviation requested. Return only mean.