Is there a tool / program / color system that enables you to get colors of the same luminance (perceived brightness)?
For example I have a pixel with these values: CGFloat red = 34 // 0 - 255 CGF开发者_JAVA百科loat green = 128
I would like to copy the content of one std::map into another. Can I use std::copy for that? Obviously, the following code won\'t work:
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