Reder Tseng's List: Clojure

• 1. Some part of the problem which has a known solution
   
  2. A relationship which connects one part of the problem to the next
   
    
• reduced, to indicate that we’ve completed our reduction early and can skip the rest of the sequence.
• fn [output element]

  • The f in reduce should be a function of 2 arguments.

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• By choosing to represent the program directly as a a data structure, we make it much easier to define complex transformations of code itself.
• Think of a syntax-quoted expression like a template for code, with some parts filled in by evaluated forms.
• [subtotal numbers]

  • two arguments form
• recur hints to the Clojure compiler that we don’t need to hold on to the stack, and can re-use that space for other things.
• tail-recursive function
• You can also use recur within the context of the loop macro, where it acts just like an unnamed recursive function with initial values provided. Think of it, perhaps, like a recursive let.
• for binds its variables to each possible combination of elements in their corresponding sequences.

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