jdormit/sicp-logic
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Clarify README language

Browse Source
This commit is contained in:
Jeremy Dormitzer 2019-07-20 16:18:17 -04:00
parent 56354588fa
commit ee365c0b6d
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
README.md
View File

@ -98,7 +98,7 @@ user> (logic/query db (or [address ?who [Cambridge [Ames Street] 3]]
(address (Bitdiddle Ben) (Slumerville (Ridge Road) 10)))) (address (Bitdiddle Ben) (Slumerville (Ridge Road) 10))))
``` ```
The query language also support "rest-variables" in the same style as Clojure's function definitions or sequence destructuring via the `&` symbol. A query of the form `[?var1 & ?rest]` would match any assertion of length 2 or greater, matching the first item in the assertion to `?var1` and binding `?rest` to a list consisting of the remaining items in the assertion. The usefulness of this is best illustrated with an example: The query language also support "rest-variables" in the same style as Clojure's function definitions or sequence destructuring via the `&` symbol. A query of the form `[?var1 & ?rest]` would match any assertion of length 2 or greater, binding `var1` to the first item in the assertion and binding `rest` to a list consisting of the remaining items in the assertion. The usefulness of this is best illustrated with an example:
``` clojure ``` clojure
user> (logic/query db [address ?who [Cambridge & ?rest]]) user> (logic/query db [address ?who [Cambridge & ?rest]])