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lang-lisp
funcallor avoiding name clashes: using higher order functions in Scheme is more natural, therefore more idiomatic, therefore compilers will work hard to optimize it. In CL, however, if you're usingdefvarto define a variable, and thenfuncallit, then compilers are very likely to compile it to much slower code than using a function definition. This is similar to CLers preferring loop constructs, and schemers preferring tail-calls instead. But of course your third point is the most important one...