Re: XML-Libraries
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:picolisp@software-lab.de?subject=Unsubscribe
Re: XML-Libraries
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 a...@software-lab.de 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:picolisp@software-lab.de?subject=Unsubscribe
Re: XML-Libraries
Hi Thorsten, Thanks for the info - and sorry for asking things that are actually explained in the docs. I knew I read about it somewhere ... No problem at all! That's what this mailing list is for :) Cheers, - Alex -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
