Switch

Hi Readers,

Today I found a bit unusual usage of switch. What if you have different N options and you have to invoke M common commands and N different commands? How you can save some extra typing job for yourself? (Or how to avoid code repetition.)

switch (var) {
case n1:
...
case nN:
  common1();
  ...
  commonM();
case n1:
  special1();
  break;
...
case nN:
  specialN();
  break;
}

Got it? The trick is using the same case terms multiple times. If you like it check the DRY approach. And of course don't forget about KISS.

Good day,
Peter