Tail call optimization is an important technique for improving the performance of recursive functions.

Using tail recursion can sometimes improve the performance of a program.

This story is progressing towards the end.

Matsutake is one of the flavors of Japanese autumn.

The pine tree on the seashore is beautifully coloring the coastline.

He explained the full story of the incident in detail.

I pray every day with Inori.

Every day, he writes the character '禱' and prays.

Matsu is as beautiful as a white jasmine flower.

He found the target and shot the arrow.