Variable

Summary

The current depth of tracing.

Package

hcl

Initial value

0

Description

*trace-level* is a special variable whose value is the current depth of tracing. The current value of *trace-level* is printed before the function name during the output from tracing.

Example

USER 8 > (defun fac (n) (if (<= n 1)

                         1

                      (* n (fac (1- n)))))

FAC 

USER 9 > (trace fac)

FAC 

USER 10 > (fac 3)

0 FAC > (3)  

  1 FAC > (2)  

   2 FAC > (1)   

   2 FAC < (1)  

  1 FAC < (2) 

0 FAC < (6) 

6 

Notes

*trace-level* is an extension to Common Lisp.

See also

trace