Functional programming

apply_along_axis(func1d, axis, arr, *args, ...)	Apply a function to 1-D slices along the given axis.
apply_over_axes(func, a, axes)	Apply a function repeatedly over multiple axes.
vectorize([pyfunc, otypes, doc, excluded, ...])	Returns an object that acts like pyfunc, but takes arrays as input.
frompyfunc(func, /, nin, nout, *[, identity])	Takes an arbitrary Python function and returns a NumPy ufunc.
piecewise(x, condlist, funclist, *args, **kw)	Evaluate a piecewise-defined function.