I want to be clear up front about two things:
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。新收录的资料对此有专业解读
This uses a recursive call, so if the list is sufficiently long (around 10k items, on my machine) node.js will experience a stack overflow and throw an exception. This is because every time the function makes a recursive call, the runtime has to “remember” where to return to in the previous invocation so that it can complete the remaining addition operation.，更多细节参见新收录的资料
D65: This is the standard illuminant used for average daylight. It is commonly used in digital imaging and sRGB color space conversions. The reference values are:\[X_n = 0.95047, \quad Y_n = 1.00000, \quad Z_n = 1.08883\]Using the standard 2° observer, the CIE 1931 color space chromaticity coordinates of D65 are:\[x = 0.31272, \quad y = 0.3290 \]