Hi Alex, Thanks for the info - and sorry for asking things that are actually explained in the docs. I knew I read about it somewhere ... Cheers Thorsten
2011/6/14 Alexander Burger <[email protected]> > Hi Thorsten, > > > There a two xml-libraries in the picolisp distrubution, xm.l (shorter but > > newer) and xml.l. > > Which one is the 'official' one? Is one of them a rewrite of the other? > > "xml.l" is the "official" one. "xm.l" is sufficient for simple purposes > (and used by some apps), and exists for historical reasons. > > > > I think I read something about it, but I can't find it anymore: > > What are the naming conventions for PicoLisp-methods? What does the use > of > > The naming conventions apply not only to methods, but to functions in > general. > > > > [? _ $] in a method-name imply? > > > xml? # probably a predicate > > Right. > > '?' by itself is not really a predicate, though, but the frontend > function for interactive Pilog queries. > > > > _xml > > If the first character is an underscore, it denotes a local function. It > is to tell the user (and the 'lint' function) that this function might, > for example, access free variables not bound in other contexts, or other > resources. > > > > _xml_ > > A trailing underscore has no special meaning. > > > > xml$ > > '$' in the beginning or end of the function's name usually indicates > some kind of string function. This is not a clearly defined convention. > > BTW, most conventions are described in "Naming Conventions" > (doc/ref.html#conv). > > > > what kind of method is this, with a "string" (transient symbol) as name > and > > the argument without parenthesis: > > (de "xmlL" Lst > > (push ...) ) > > These are two independent issues: > > 1. Using a transient symbol protects this symbol from accesses outside > the current source file. This applies to functions, methods, > variables or whatever. > > 2. If a function or method has a single symbolic parameter (not a list > of symbols as in most cases), this symbol is bound to the list of all > _unevaluated_ arguments. > > This is described in more detail in "Evaluation" (doc/ref.html#ev). > > Cheers, > - Alex > -- > UNSUBSCRIBE: mailto:[email protected]?subject=Unsubscribe >
