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林平之背负血海深仇，武功低微可能就是他心中最大的痛。Lightness mode. The parameters that determine the generated color include: the hue and saturation of the bottom color and the brightness of the top color. The effect of this mode is just the opposite of Color mode, which mixes with the lower color according to the brightness distribution of the upper color.因此此人是任何君王都想得到了人才。李左车很是无奈。Printing the screenshot above, we can see that the subscriber receives every message from the publisher. However, for Xiao Hong, she only wants to receive messages with red color and does not want to receive messages with black color. Therefore, we need to make the following modifications to the code. We can first add a key so that the subscriber can only subscribe to messages of interest to herself. The code is as follows:2. Dynamically add functions to an object and undo them dynamically. (Inheritance cannot do this. The function of inheritance is static and cannot be added or deleted dynamically.)