通过使用常量字符串，可以避免分配内存、复制字符串和编码转换过程。

By using a constant string, you avoid allocating memory, copying the string, and the transcoding process.

youdao

通过使用常量字符串，可以避免分配内存、复制字符串和编码转换过程。

By using a constant string, you avoid allocating memory, copying the string, and the transcoding process.

youdao