Extend @ref argU2fU_3 "arg//3"3 with backtracking.¶

arg//33 plus backtracking and paths.

author:
It is based on the Quintus Prolog public domain library.

author:
it was first included in the YAP library by Vitor Santos Costa, 2008.

This library extends arg//33 by supporting backtracking through arguments and access to sub-arguments counting from 0.

No error checking is actuallly performed within the Prolog code: this left to the C-code that implements arg//33 and genarg//33.

• args0/5
• args/5
• prolog::path_arg/3
• prolog::args0/3
• prolog::args/3
• prolog::genarg0/3
• prolog::arg0/3