What is the difference between convenience init vs init in swift, explicit examples better

Standard init: Designated initializers are the primary initializers for a class. A designated initializer fully initializes all properties introduced by that class and calls an appropriate superclass initializer to continue the initialization process up the superclass chain. convenience init: Convenience initializers are secondary, supporting initializers for a class. You can define a convenience initializer to … Read more

How to normalize a NumPy array to within a certain range?

# Normalize audio channels to between -1.0 and +1.0 audio /= np.max(np.abs(audio),axis=0) # Normalize image to between 0 and 255 image *= (255.0/image.max()) Using /= and *= allows you to eliminate an intermediate temporary array, thus saving some memory. Multiplication is less expensive than division, so image *= 255.0/image.max() # Uses 1 division and image.size … Read more

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