| * The query &test1(off,7,Passed).& tests the reverse predicate: | |
| test(7,`[[n,reverse],[[1,2,3],[],[v,l]]]`, | |
| `[[[n,reverse],[[],[v,l],[v,l]]],[[n,reverse],[[v,l],[v,m],[v,n]],":-",[[[n,head],[[v,l],[v,h]]],[[n,tail],[[v,l],[v,t]]],[[n,wrap],[[v,h],[v,h1]]],[[n,append],[[v,h1],[v,m],[v,o]]],[[n,reverse],[[v,t],[v,o],[v,n]]]]]]`, | |
| `[[[v,l], [3, 2, 1]]]`). | |
| # Documentation | |
| * The interpreter is called in the form: | |
| &international_interpret([lang,en]&,debug,query,type_statements,mode_statements,functions,result). | |
| Where: | |
| debug - on or off for trace, | |
| query - the query e.g. [[n,reverse],[[1,2,3],[],[v,l]]] | |
| type statements - e.g. [[n,reverse],[{[t, number]}, {[t, number]}, {[t, number]}]] | |
| mode statements - e.g. [[n,reverse],[input,input,output]] | |
| functions - the algorithm e.g. see reverse above | |
| result - the result, e.g. [[[v,l], [3, 2, 1]]] ([] indicates failed and [[]] indicates the empty list). | |
| * Statements may be negated in the form: | |
| `[[n,not],[statement]]` | |
| * Statements may be connected by the disjunctive (or): | |
| `[[n,or],[statements1,statements2]]` | |
| * If-then statements may either be in the form: | |
| `[[n,"->"],[statements1,statements2]]` | |
| This means "If Statements1 then Statements2". | |