Hi Alex,
On 12. Sep, 2014, at 16:06, Alexander Burger a...@software-lab.de wrote:
It is not a good idea to build a list only to count its length. Better
count in a loop directly, e.g.:
(de sindex (Frag Src)
(for ((I . L) (chop Src) L (cdr L))
(T (pre? Frag L) I) ) )
For
Hi Jon,
For this 'sindex' I think it would be good to first test if Frag is
NIL, since with your version above (sindex NIL foo) would give 1.
The 1 is (arguably) correct, because an empty string is a substring of
*every* string.
: (pre? NIL bla)
- bla
♪♫ Alex
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UNSUBSCRIBE:
Hi,
The other day I noticed that I hadn't seen a PicoLisp function for locating a
string fragment within a longer string. Is there one that I just have failed to
notice? It is quite common for programming languages to have an index
function that does this. PicoLisp has an 'index' function, but
Hi Jon,
The other day I noticed that I hadn't seen a PicoLisp function for
locating a string fragment within a longer string. Is there one that I
just have failed to notice?
Yes, that's right. In fact, the only functions which I would regard as
string manipulations (i.e. operate directly on a
Hi Alex,
Thanks for the reply, and for suggesting a better solution than the one I made
up. I have no immediate use for such a 'sindex' function, and maybe this is not
a function that one would need very often when doing things the PicoLisp way.
Have a nice weekend!
/Jon
On 12. sep. 2014, at
