prolog::nth1/3¶

nth1(+ Index,? List,? Elem)*

Succeeds when the Index-th element of List unifies with Elem. Counting starts at 1.

Set environment variable. Name and Value should be instantiated to atoms or integers. The environment variable will be passed to shell/[0-2] and can be requested using getenv/2. They also influence expand_file_name//22.

Private-func:¶

1. prolog::nth1_3::nth1/3(int ARG1, int ARG2, int ARG3)():