Builder Pattern

[Peter Otten]

> I have converted another example of strategy which I prefer to the 2
> described earlier, here it is:
> 
> class FindMinima:
>         def algorithm(self):raise NotImplementedError

When most of your code does nothing in a pompous way that is a sure sign
that you are heading in the wrong direction. Here's a translation into
python:

def least_squares(line):
    return 1.1, 2.2

def newtons_method(line):
    return 3.3, 4.4

def bisection(line):
    return 5.5, 6.6

def conjugate_gradient(line):
    return 3.3, 4.4

def test():
    solver = least_squares
    print solver((5.5,5.5))
    solver = bisection
    print solver((5.5,5.5))

test()

Peter