Array of Chars to String

[Bengt Richter]

On Tue, 19 Apr 2005 17:00:02 -0700, Michael Spencer <mahs at telcopartners.com> wrote:

>Michael Spencer wrote:
>> Bengt Richter wrote:
>>  > I think this will be worth it if your string to modify is _very_ long:
>> 
>>>
>>>  >>> def some_func(s, letters, table=''.join([chr(i) for i in 
>>> xrange(256)])):
>>>  ...     return s.translate(table,
>>>  ...            ''.join([chr(i) for i in xrange(256) if chr(i) not in 
>>> letters]))
>>>  ...
>>>  >>> some_func("Bob Carol Ted Alice", 'adB')
>>>  'Bad'
>>>
>> According to my measurements the string doesn't have to be long at all 
>> before your method is faster - cool use of str.translate:
>> 
>...and here's a version that appears faster than "".join across all lengths of 
>strings:
>  >>> import string
>  >>> def some_func1(s, letters, table=string.maketrans("","")):
>  ...     return s.translate(table, table.translate(table, letters))
>  ...
>  >>> some_func1("Bob Carol Ted Alice", "adB")
>  'Bad'
>  >>>
>
Good one! ;-)

BTW, since str has .translate, why not .maketrans?

Anyway, this will be something to keep in mind when doing character-based joinery ;-)

>Timings follow:
Let's just say improved ;-)
(or see parent post)

Regards,
Bengt Richter