building a database article: Use :db/root over null value

4 files changed, 64 insertions, 29 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
diff --git a/locale/eo/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po b/locale/eo/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po
index 19bc893..546041b 100644
--- a/locale/eo/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po
+++ b/locale/eo/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po
@@ -72,14 +72,6 @@ msgid ""
 msgstr ""
 
 msgid ""
-"[[person :likes  \"pizza\" 0 true]\n"
-" [0      :parent null    0 true]\n"
-" [person :likes  \"bread\" 1 true]\n"
-" [person :likes  \"pizza\" 1 false]\n"
-" [1      :parent 0       1 true]]\n"
-msgstr ""
-
-msgid ""
 "The extra datoms above add more information to build the directionality to "
 "the log, and instead of a single consistent log, the DAG could have multiple"
 " leaves that coexist, much like how different Git branches can have "
@@ -341,5 +333,24 @@ msgstr ""
 msgid "eu_categories: mediator"
 msgstr ""
 
+msgid "updated_at: 2020-11-14"
+msgstr ""
+
+msgid ""
+"[[person :likes  \"pizza\"  0 true]\n"
+" [0      :parent :db/root 0 true]\n"
+" [person :likes  \"bread\"  1 true]\n"
+" [person :likes  \"pizza\"  1 false]\n"
+" [1      :parent 0        1 true]]\n"
+msgstr ""
+
+#~ msgid ""
+#~ "[[person :likes  \"pizza\" 0 true]\n"
+#~ " [0      :parent null    0 true]\n"
+#~ " [person :likes  \"bread\" 1 true]\n"
+#~ " [person :likes  \"pizza\" 1 false]\n"
+#~ " [1      :parent 0       1 true]]\n"
+#~ msgstr ""
+
 #~ msgid "category: mediator"
 #~ msgstr ""
diff --git a/locale/fr/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po b/locale/fr/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po
index 19bc893..546041b 100644
--- a/locale/fr/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po
+++ b/locale/fr/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po
@@ -72,14 +72,6 @@ msgid ""
 msgstr ""
 
 msgid ""
-"[[person :likes  \"pizza\" 0 true]\n"
-" [0      :parent null    0 true]\n"
-" [person :likes  \"bread\" 1 true]\n"
-" [person :likes  \"pizza\" 1 false]\n"
-" [1      :parent 0       1 true]]\n"
-msgstr ""
-
-msgid ""
 "The extra datoms above add more information to build the directionality to "
 "the log, and instead of a single consistent log, the DAG could have multiple"
 " leaves that coexist, much like how different Git branches can have "
@@ -341,5 +333,24 @@ msgstr ""
 msgid "eu_categories: mediator"
 msgstr ""
 
+msgid "updated_at: 2020-11-14"
+msgstr ""
+
+msgid ""
+"[[person :likes  \"pizza\"  0 true]\n"
+" [0      :parent :db/root 0 true]\n"
+" [person :likes  \"bread\"  1 true]\n"
+" [person :likes  \"pizza\"  1 false]\n"
+" [1      :parent 0        1 true]]\n"
+msgstr ""
+
+#~ msgid ""
+#~ "[[person :likes  \"pizza\" 0 true]\n"
+#~ " [0      :parent null    0 true]\n"
+#~ " [person :likes  \"bread\" 1 true]\n"
+#~ " [person :likes  \"pizza\" 1 false]\n"
+#~ " [1      :parent 0       1 true]]\n"
+#~ msgstr ""
+
 #~ msgid "category: mediator"
 #~ msgstr ""
diff --git a/locale/pt/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po b/locale/pt/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po
index 19bc893..546041b 100644
--- a/locale/pt/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po
+++ b/locale/pt/LC_MESSAGES/_articles/2020-11-12-durable-persistent-trees-and-parser-combinators-building-a-database.po
@@ -72,14 +72,6 @@ msgid ""
 msgstr ""
 
 msgid ""
-"[[person :likes  \"pizza\" 0 true]\n"
-" [0      :parent null    0 true]\n"
-" [person :likes  \"bread\" 1 true]\n"
-" [person :likes  \"pizza\" 1 false]\n"
-" [1      :parent 0       1 true]]\n"
-msgstr ""
-
-msgid ""
 "The extra datoms above add more information to build the directionality to "
 "the log, and instead of a single consistent log, the DAG could have multiple"
 " leaves that coexist, much like how different Git branches can have "
@@ -341,5 +333,24 @@ msgstr ""
 msgid "eu_categories: mediator"
 msgstr ""
 
+msgid "updated_at: 2020-11-14"
+msgstr ""
+
+msgid ""
+"[[person :likes  \"pizza\"  0 true]\n"
+" [0      :parent :db/root 0 true]\n"
+" [person :likes  \"bread\"  1 true]\n"
+" [person :likes  \"pizza\"  1 false]\n"
+" [1      :parent 0        1 true]]\n"
+msgstr ""
+
+#~ msgid ""
+#~ "[[person :likes  \"pizza\" 0 true]\n"
+#~ " [0      :parent null    0 true]\n"
+#~ " [person :likes  \"bread\" 1 true]\n"
+#~ " [person :likes  \"pizza\" 1 false]\n"
+#~ " [1      :parent 0       1 true]]\n"
+#~ msgstr ""
+
 #~ msgid "category: mediator"
 #~ msgstr ""