Make me beautiful (code needs help)

[Duncan Booth]

[posted and mailed]

Mark <Hobbes2176 at yahoo.com> wrote in
news:HVd%8.6582$I4.1825 at nwrddc03.gnilink.net: 

> data["A"] = [1,2,4,10,50]
> 
> and I want to get:
> 
> data["new"] = [?, 1, 2, 6, 40]
> 
> That is, I want to get the successive differences into their proper
> place. I don't care what is in the question mark spot.  I'll figure
> that out later. 

How about this?

>>> from __future__ import generators
>>> def adjacent(it):
	it = iter(it)
	value = it.next()
	for value2 in it:
		yield value, value2
		value = value2

		
>>> a = [1, 2, 4, 10, 50]
>>> print [ q-p for p,q in adjacent(a)]
[1, 2, 6, 40]
>>> 

-- 
Duncan Booth                                             duncan at rcp.co.uk
int month(char *p){return(124864/((p[0]+p[1]-p[2]&0x1f)+1)%12)["\5\x8\3"
"\6\7\xb\1\x9\xa\2\0\4"];} // Who said my code was obscure?