We want to write to "foo.txt" in a given directory. If "foo.txt" already exists, we want to write to "foo-1.txt", and so on.We want to write to "foo.txt" in a given direct
阅读背景：
如何在Cocoa中安全地写入给定的文件路径，必要时添加数字后缀？
来源：互联网
分享到：
