On 2020-08-25 13:52, Daniel. wrote:
I just came across this again while implementing an parser
I would like to compare stack elements as
if stack[-3] == x and stack[-2] == y and stack[-1] == z
if stack[-3 : ] == [x, y, z]:
and somewere below
elif stack[-1] == t
elif stack[-1 : ] == [t]:
I had to spread `len(stack)` in a lot of places.
You can use slicing to reduce the number of `len(stack)`.
People said about the length of a list is usually known, but when you
use it as a stack is the oposit.
[snip]
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