On Sat, Jul 24, 2010 at 3:16 PM, samnardoni wrote:
>
> I have a simple string (or list of characters to be precise) in a form
> of: "1234<5678<<9".
>
> I want to parse this string and end up with: "123569".
>
> The "<" is essentially the same as a "backspace".
>
I think reduce(or fold/foldl' in Ha
On Mon, Jul 26, 2010 at 09:58, Michael Wood wrote:
> On 26 July 2010 09:25, B Smith-Mannschott wrote:
> [...]
>> That said, don't use my code. It's hideous. And by now, I'm sure
>> there's a cleaner solution possible for my approach:
>>
>> The idea is to split the input string into a lazy list of
On 26 July 2010 09:25, B Smith-Mannschott wrote:
[...]
> That said, don't use my code. It's hideous. And by now, I'm sure
> there's a cleaner solution possible for my approach:
>
> The idea is to split the input string into a lazy list of substrings
> alternating between strings containing no "<"
On Mon, Jul 26, 2010 at 08:13, ka wrote:
>> For the program, I know that when processing a character, I do not
>> need the previous result. All I need is the current character, and I
>> can return a function that acts on the result. I'm not sure if this is
>> simple to implement in a functional wa
> For the program, I know that when processing a character, I do not
> need the previous result. All I need is the current character, and I
> can return a function that acts on the result. I'm not sure if this is
> simple to implement in a functional way.
Actually my understanding says that you ne
On Sun, Jul 25, 2010 at 00:16, samnardoni wrote:
> I have a simple string (or list of characters to be precise) in a form
> of: "1234<5678<<9".
>
> I want to parse this string and end up with: "123569".
>
> The "<" is essentially the same as a "backspace".
>
> I managed to implement this fairly si
Randy, thanks for the reply. This has certainly cleared things up for
me.
I was only concerned about performance for an order of magnitude or
more; just checking I was on the right track, so to speak.
It seems I'll have to do a little research on transients now.
On Jul 25, 4:23 pm, Randy Hudson
This is a wholly appropriate use of reduce; it's the obvious function
to use when you want to "accumulate" some calculation over a sequence.
As you say, you can just produce a function that acts on the result,
something like
(defn fstep [c] (if (= c \<) pop #(conj % c))
However, the obvious way
I have a simple string (or list of characters to be precise) in a form
of: "1234<5678<<9".
I want to parse this string and end up with: "123569".
The "<" is essentially the same as a "backspace".
I managed to implement this fairly simply using the reduce function -
source: http://gist.github.com
