A notable resource on the topic of ordered dithering using arbitrary palettes is Joel Yliluoma’s Arbitrary-Palette Positional Dithering Algorithm. One key difference of Yliluoma’s approach is in the use of error metrics beyond the minimisation of . Yliluoma notes that the perceptual or psychovisual quality of the dither must be taken into account in addition to its mathematical accuracy. This is determined by use of some cost function which considers the relationship between a set of candidate colours. The number of candidates, the particular cost function, and the thoroughness of the selection process itself give rise to a number of possible implementations, each offering varying degrees of quality and time complexity.
代码重构：它没有直接甩代码，而是先思考了“设计模式”的选择（工厂模式 vs 策略模式），最终选择了适合扩展的策略模式。
While Gelidium seaweeds can be collected by gathering fragments washed ashore, mass production of agar requires steady, large quantities.10 Harvesters in New Zealand during WWII had to “walk beside a boat, waist to armpit deep in water and feel for the weed with their feet.” Handling large volumes of wet seaweed (which yields less than five percent agar) was challenging. Then as now, when Gelidium is harvested by scuba divers from rocky seabeds, collectors have to understand the life cycle of the algae, find the most likely locations for its growth, and prevent overharvesting to safeguard future yields.，详情可参考safew官方版本下载
我曾听到过一位母亲教育孩子：“自己孩子自己管，管好了自己孩子，自己孩子就不会有别人来管。”这话放在成年人身上也是合适的。最大的自由是自律，自律住了，可以得大自在；不能自律，必有他律，让他人来管，让组织来管，让法律来管，那时节悔之晚矣——他人来管，可能让人皮肉精神两伤；法律来管，可能让人余生世界只有几平方米。，详情可参考服务器推荐
Source: Computational Materials Science, Volume 266
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