Package: xpath-sys

Macro make-pipe

Lambda List

make-pipe (head tail)


  • head -- pipe head (evaluated)
  • tail -- tail expression

Return Value

a pipe


Constructs a pipe (lazy list).

The head expression is evaluated immediatelly. The value of head will be returned by pipe-head called for the pipe object returned by make-pipe. Evaluation of tail expression is delayed until pipe-tail is called for the pipe returned by this function. Evaluation of tail expression should produce a pipe or a list.

See also