[Python-ideas] [Python-Dev] minmax() function returning (minimum, maximum) tuple of a sequence

[Nick Coghlan]

On Thu, Oct 14, 2010 at 7:54 AM, Tal Einat <taleinat at gmail.com> wrote:
> class RunningMax(RunningCalc):
>    def __init__(self):
>        self.max_value = None
>
>    def feed(self, value):
>        if self.max_value is None or value > self.max_value:
>            self.max_value = value
>
>    def feedMultiple(self, values):
>        self.feed(max(values))
>
> feedMultiple() would have a naive default implementation in the base class.
>
> Now this is non-trivial and can certainly be useful. Thoughts? Comments?

Why use feed() rather than the existing generator send() API?

def runningmax(default_max=None):
    max_value = default_max
    while 1:
        value = max(yield max_value)
        if max_value is None or value > max_value:
            max_value = value

That said, I think this kind of thing requires too many additional
assumptions about how things are driven to make a particularly good
candidate for standard library inclusion without use in PyPI library
first.

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia