The only problem is that right now very few compilers implement tail-call optimizations.

惟一的问题在于，现在只有非常少的编译器实现了尾部调用优化。

youdao

When a function calls itself in a tail-call, the method is even easier.

当函数在尾部调用中调用自己时，方法更为简单。

youdao

For those who actually like to mess with the low-level stuff, here is an assembly language template for an optimized tail-call.

这里是为那些真正热衷底层编程的人准备的一个优化尾部调用的汇编语言模板。

youdao

"After the hyper growth in the e-book market over the last few years, consumers have settled into their book formats of choice, and while e-books will continue to drive growth in the book category in the future, physical book sales will have a longer tail (or longer life expectancy) than previously anticipated, " he said in a call with investors.

WSJ: Barnes & Noble posts 3Q loss as Nook demand slows