tree cce22a6e0391a9dc5c01c8308674243902ed7bd7
parent f9b24bf1b064600bb3f450dbbce475937742c121
author Andrew Jeffery <andrew@aj.id.au> 1525848046 +0930
committer Andrew Jeffery <andrew@aj.id.au> 1526341843 +0930

server: Stop making lists out of everything

As a demonstration of the cost of this pattern:

$ python -m timeit "for i in list(range(0, 1000000)): pass"
10 loops, best of 3: 31.4 msec per loop

vs:

$ python -m timeit "for i in range(0, 1000000): pass"
10 loops, best of 3: 23.5 msec per loop

Avoiding the list represents a 33% improvement in execution speed.

In a couple of cases this strategy is taken a bit further and generators
are introduced to avoid explicitly creating lists.

Change-Id: I28b3d90dd227f5a2661cd86c0941c54531ad5413
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>