c++ - iOS枚举为什么用十六进制而不是十进制？-6ren

c++ - iOS枚举为什么用十六进制而不是十进制？

转载作者：太空宇宙更新时间：2023-11-04 07:51:01

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typedef NS_OPTIONS (NSInteger, YYTextLineStyle) {
// basic style (bitmask:0xFF)
YYTextLineStyleNone       = 0x00, ///< (        ) Do not draw a line (Default).
YYTextLineStyleSingle     = 0x01, ///< (──────) Draw a single line.
YYTextLineStyleThick      = 0x02, ///< (━━━━━━━) Draw a thick line.
YYTextLineStyleDouble     = 0x09, ///< (══════) Draw a double line.

// style pattern (bitmask:0xF00)
YYTextLineStylePatternSolid      = 0x000, ///< (────────) Draw a solid line (Default).
YYTextLineStylePatternDot        = 0x100, ///< (‑ ‑ ‑ ‑ ‑ ‑) Draw a line of dots.
YYTextLineStylePatternDash       = 0x200, ///< (— — — —) Draw a line of dashes.
YYTextLineStylePatternDashDot    = 0x300, ///< (— ‑ — ‑ — ‑) Draw a line of alternating dashes and dots.
YYTextLineStylePatternDashDotDot = 0x400, ///< (— ‑ ‑ — ‑ ‑) Draw a line of alternating dashes and two dots.
YYTextLineStylePatternCircleDot  = 0x900, ///< (••••••••••••) Draw a line of small circle dots.
};

这段代码是我在一个框架上看到的，一般枚举值都用十进制，但是这段代码用十六进制，有什么好处？