Favorite non-python language trick?

[Christopher Subich]

Devan L wrote:
> sum(sequence[0] + [1/element for element in sequence[1:]])
> 
> I think that should work.

That won't work, because it misses the x*y part of the expression 
(x[n]*x[n+1] + 1/x[n+1], for people who haven't immediately read the 
grandparent).

Personally, I think demanding that it be writable as a sum (or product, 
or any, or all) is a false standard -- nobody's claimed that these would 
replace all cases of reduce, just the most common ones.