On Dec 5, 9:52 pm, HB wrote:
> Hi,
> I'm trying to write a function that calculates the length of a list:
>
> (defn list-length [col]
> (if col
> (+ 1 (list-length(rest col)))
> 0))
>
> (list-length '(Java, Clojure, Scala))
>
> Upon running it in the REPL, I got the error:
> java.lang.St
On Nov 28, 1:20 pm, John Harrop wrote:
> One benefit of having a REPL: it makes regular expressions usable. So easy
> to test and tweak your RE compared to the traditional compile/test/debug
> cycle! I never even bothered with the java.util.regex package before Clojure
> as it was too painful to u
> Danny, could you maybe hack up a possible very simple example of what
> you mean?
> I can not simply store a copy of the Karl person in Tinas :friends
> slot,
> because when Karl gets one year older, then I don‘t want to go through
> all persons, looking for Karls, and have their age updated.
André Thieme wrote:
> How can we handle this situation?
> Is it possible to implement a function “deep-deref” which works
> as blindingly fast as deref does?
> I find this very important, and this is of great practical relevance
> for me. Please share your ideas
Hi André,
I had a similar issue wi
the length of the vector on every iteration: I suspect that may
involve a traversal of the vector every time it's called.
Cheers,
Danny.
On 19/10/2009 13:37, Stuart Campbell wrote:
> 2009/10/19 Danny Woods <mailto:dannywo...@gmail.com>>
>
>
> harto wrote:
> >
harto wrote:
> Hello,
>
> I've just started learning Clojure, so I'm trying to figure out the
> correct way of doing things. I've been trying to create and 'modify' a
> large vector for an online programming exercise, but I'm running into
> some performance issues.
>
> Any general tips would be ap
Perl and Ruby do something similar with regular expressions, where the
character following 'm' or 's' becomes the delimiter for that
expression, making 'm/\/some\/path/' identical to 'm!/some/path!'. The
delimeter can be 'smart' as well, where the closing delimiter is
dependent upon the opening o
+1 for Higher Order Perl. The author, Mark Jason Dominus, has made
the book available for free download at http://hop.perl.plover.com/book/.
Cheers,
Danny.
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