Compact syntax for 0-matrix?

[Kirby Urner]

kajiyama at grad.sccs.chukyo-u.ac.jp (Tamito Kajiyama) wrote:

>Kirby Urner <urner at alumni.princeton.edu> writes:
>> 
>> Here's another function I like OK:
>> 
>>    def zeromatrix(n,m):
>>         output = []
>>         for i in range(n): output.append([0]*m)
>>         return output
>
>Or, more shortly,
>
>    def zeromatrix(m, n):
>        return map(lambda x: [0]*x, [n]*m)
>
>It seems more time-consuming, though ;)
>
>-- 
>KAJIYAMA, Tamito <kajiyama at grad.sccs.chukyo-u.ac.jp>


Yes, that's very compact, really tests one's understanding
of lambda.

I'm thinking this "zeromatrix" exercise might be a good
one for Python learners -- certainly it has been helpful
to me.

Kirby