Xsb List Utilities Library

• Apparently the configuration of xsb on our linux machines does not automatically load the library that contains basic list operations such as append, length, reverse.


• Of course you can write these routines yourself, but it's also useful to know how to load the library.


• The list utility library is called "basics", and it can be loaded in several ways:


• Simply load the library directly from the xsb prompt, like this: [basics].


• Use a command line option to cause the library to be loaded on startup: xsb -e [basics].
• You can of course create an alias that contains this option.


• Create an xsb startup file, which should be named .xsb/xsbrc.P, and in that file put the command ":- [basics]." (with the :- but without the quotes).


• To find out what library a utility is in you can look at (volume 2 of the prolog manual. Module names are specified in italics following the name of the predicate. The list utilities are given here.