3 ms·

Semantically, "when" implies that something will happen, whereas "if" implies that it could happen.

• munk-a 5y ago
  When pigs fly I'll accept that "when" implies that something will happen.
  • deleted 5y ago
    [deleted]
  • goatlover 5y ago
    Why would you write a when statement for something that can't happen?
    • munk-a 5y ago
      If you're talking about in english "when pigs fly is" a common idiom. If you're talking about code - sometimes it's nice to have extra-defensive code even if it's mostly inconceivable it will ever be triggered (especially if this will be used as a library for a lot of folks) but mostly you wouldn't.
• aidenn0 5y ago
  When you write conditionals for events that will never happen in your CSS you are doing it wrong.