Creating a Dictionary
Bill
BILL_NOSPAM at whoknows.net
Wed Oct 4 22:02:50 EDT 2017
Stefan Ram wrote:
> One might wish to implement a small language with these commands:
Explain why. What is the advantage?
>
> F - move forward
> B - move backward
> L - larger stepsize
> S - smaller stepsize
>
> . One could start with the following pseudocode for a dictionary:
>
> { 'F': lambda: myturtle.forward( s ),
> 'B': lambda: myturtle.backward( s ),
> 'L': lambda: global s; s *= 2,
> 'S': lambda: global s; s /= 2 }
>
> . But lambda-expressions cannot contain statements.
>
> In real Python one could write something like (untested):
>
> def f():
> myturtle.forward( s )
>
> def b():
> myturtle.backward( s )
>
> def l():
> global siz
> size *= 2
>
> def s():
> global siz
> size /= 2
>
> { 'F': f,
> 'B': b,
> 'L': l,
> 'S': s }
>
> . Is this more readable or less readable?
>
> Any other suggestions?
>
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