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预定义常量
DIRECTORY_SEPARATOR
(
string
)
PATH_SEPARATOR
(
string
)
Windows 上使用分号，除此之外使用冒号。
SCANDIR_SORT_ASCENDING
(
int
)
SCANDIR_SORT_DESCENDING
(
int
)
SCANDIR_SORT_NONE
(
int
)
＋
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