Domain Languages: Apex

Tip #17 in The Pragmatic Programmer is:

"Program Close to the Problem Domain."

Lately I've been spending a bunch of time building Apex web services for my customer and I can tell you that it's a super powerful language. My pseudo-code translates almost line-for-line in to Apex code. Here's an example:

//get the oppty line items for this oppty
List opptyLineItems = [Select Id, PricebookEntry.Product2Id from OpportunityLineItem Where OpportunityId = :opptyId];

In C# this one line of code would translate to four or five lines of code. Visualforce is the equivalent development productivity lever for user interfaces. Pretty cool stuff.