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    apply-template
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    Macros that expand to repeated copies of a template expression.
    

    — Stuart Sierra

    (apply-template argv expr values)
    For use in macros.  argv is an argument list, as in defn.  expr is
    a quoted expression using the symbols in argv.  values is a sequence
    of values to be used for the arguments.
    
    apply-template will recursively replace argument symbols in expr
    with their corresponding values, returning a modified expr.
    
    Example: (apply-template '[x] '(+ x x) '[2])
             ;=> (+ 2 2)
    macro
    (do-template argv expr & values)
    Repeatedly copies expr (in a do block) for each group of arguments
    in values.  values are automatically partitioned by the number of
    arguments in argv, an argument vector as in defn.
    
    Example: (macroexpand '(do-template [x y] (+ y x) 2 4 3 5))
             ;=> (do (+ 4 2) (+ 5 3))