paths

Path symbols.

I think these are defunct. There is no need with '~'

Symbols can be defined to represent paths. Those symbols can then be used in other commands, when accessed they will resolve to their value. Here is a sample session which creates some yaml, then a path to that yaml, showing how the show command works with the new symbol.

These paths are a bit like macros. They are resolved to their values before the interpreter tries to execute. They act like normal computer language variables in some respects.

At the same time as being able to resolve a value, they also point to the place where the value is, So it is possible to use them in interesting ways. As in the way the results stack works.

Here's a sample session to ponder.

SPR:> '
YAML...>foo:
YAML...>   bar: show /foo/baz
YAML...>   baz: 110
YAML...>

SPR:> show foo
bar: show /foo/baz
baz: 110

SPR:> def-path sbaz "foobaz" /foo/baz

SPR:> sbaz
Unkown Symbol: 110

SPR:> def-path showbaz "foobaz" /foo/bar

SPR:> showbaz
110

SPR:> set /foo/bar show /foo

SPR:> showbaz
bar: show /foo
baz: 110