between and among: worth Phobosization?

[bearophile]

Andrei Alexandrescu:

> bool between(T, U1, U2)(T v, U1 lo, U2 hi)
> {
>     return v >= lo && v <= hi;
> }

I vote a +1 for between(). One use case:

http://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers#Stronger_Statically_Typed_Version

It also helps in the D translation of Python expressions like:

if foo() and 3 < bar(x) < 5 and ...:

That in D need to be split in more lines unless bar() is pure and 
light.

-----------------

Regarding Phobos, currently one of the features I miss mostly is 
an optional template function for the min and max functions:

https://d.puremagic.com/issues/show_bug.cgi?id=4705#c16

Bye,
bearophile