On Wed, 12 May 2010 16:45:47 +0200 (CEST) Michael Van Canneyt <mich...@freepascal.org> wrote:
> > > On Wed, 12 May 2010, spir ☣ wrote: > > > Hello, > > > > * TFPList > > Is there another way to traverse a list than > > for i :=0 to (list.count - 1) do ... > > You can use an enumerator with the latest SVN: > > foreach P in List do Great! > > What about list.high? > > Count=High. ? In my code count=high+1. I mean list[list.count] does not exist. > > Also, is it possible to set a list's base index to 1 (so that > > last_index=count)? > > No. That would break all other existing code. I don't understand. If I set myList.baseIndex := 1, how can it affect other people's code? It's a new feature that does not touch existing codebase. > > There is a super handy forEachCall method (calling a proc for each item), > > but I cannot find a matching map method (calling a func and storing > > results). > > What do you mean with 'Map' ? It's the conventional name in most PLs of a higher-order function that creates a new sequence from an original one and a mapping func: cubes := map(numbers, cube) or in OO style: cubes := numbers.map(cube) But you certainly know that better than me... > > * string <-> number > > I could not find _functions_ to operate such conversions, only _procedures_ > > str and val. So that I always end up with superfluous statements and temps > > variables: > > str(n,text); > > writeln(text); > > In SysUtils: StrToInt() and IntToStr() Thank you. Hadn't found them. [...] > > * array value notation > > I can set a static array's value on declaration line, but could not find a > > way to do it later (even less to change it). And I cannot find a way to set > > the value of a dynamic array --when it's not fed from a loop. End up with > > series of arr[i]:=v statements (code from the > > http://en.wikipedia.org/wiki/Middle_ages ;-). Same for lists, indeed. > > var > > arr : array [1..2] of Integer; > > ... > > i:=1 ; j:=2; > > arr := (i,j); > > ==> Syntax error, ")" expected, but "," found > > This is only possible with dynamic arrays (no declared length), and there you > should use setlength. I haven't managed to do that with dynamic arrays, even after setting length. var a : array of Integer; begin setLength(a, 3); a := (1,2,3); writeln(a[1]); end. ==> same error message as above > > Finally: is there a wiki version of the official docs, to collectively > > enhance them (with notes, examples, explanations...). > > (I'm dreaming, but after all fpc is free software, and it's the #1 reason > > why I chose it.) (*) > > No, there is no wiki version, and there never will be. ....... Denis ________________________________ vit esse estrany ☣ spir.wikidot.com _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
