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| author | EuAndreh <eu@euandre.org> | 2020-11-14 12:04:56 -0300 |
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| committer | EuAndreh <eu@euandre.org> | 2020-11-14 13:51:05 -0300 |
| commit | 0fd1625d5cc9dab03ccd4df50d525ee8c0231f53 (patch) | |
| tree | b0602db2384facf7a2cca902fa32521447bd53ca /_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.md | |
| parent | Use "eu_categories" frontmatter attribute (diff) | |
| download | euandre.org-0fd1625d5cc9dab03ccd4df50d525ee8c0231f53.tar.gz euandre.org-0fd1625d5cc9dab03ccd4df50d525ee8c0231f53.tar.xz | |
building a database article: Use :db/root over null value
Diffstat (limited to '')
| -rw-r--r-- | _articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.md | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.md b/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.md index 6e51575..8825c7f 100644 --- a/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.md +++ b/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.md @@ -4,6 +4,8 @@ title: Durable persistent trees and parser combinators - building a database date: 2020-11-12 +updated_at: 2020-11-14 + layout: post lang: en @@ -48,11 +50,11 @@ writers, and I chose to do it by making the log not a list, but a directed acyclic graph (DAG): ```clojure -[[person :likes "pizza" 0 true] - [0 :parent null 0 true] - [person :likes "bread" 1 true] - [person :likes "pizza" 1 false] - [1 :parent 0 1 true]] +[[person :likes "pizza" 0 true] + [0 :parent :db/root 0 true] + [person :likes "bread" 1 true] + [person :likes "pizza" 1 false] + [1 :parent 0 1 true]] ``` The extra datoms above add more information to build the directionality to the |