2 Loop Constructs
named construct to name a loop so that the Common Lisp special formreturn-from can be used. Theinitially andfinally loop keywords designate loop constructs that cause expressions to be evaluated before and after the loop body respectively.
The loop constructinitially causes expressions to be evaluated before any other clauses in the expanded form ofloop; if specified,initially clauses lead the loop prologue. The constructfinally causes expressions to be evaluated after all other clauses in the expanded form; if specified,finally clauses end the loop epilogue.
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