port examples/date_in_local_timezones.nu

- embed the `core-team` table, remove `assets/core_team.nu`
- embed the `date local` function from `language/std/date`
- explicit print
- `str collect` -> `str join`
- `$block` -> `$closure`
- `date format` -> `format date`

modules/examples/date_in_local_timezones.nu

@@ -1,25 +1,42 @@
-source lib/scripts.nu
-source assets/core_team.nu
 
-let next_call = ("2021-08-31 15:00:21.290597200 -05:00" | str to-datetime);
+def "nu core-team" [] {
+  [
+    [        'name',                'tz'];
+    [      'andres', 'America/Guayaquil']
+    [     'fdncred',        'US/Central']
+    [       'gedge',        'US/Eastern']
+    [          'jt',                'NZ']
+    [      'wycats',        'US/Pacific']
+    [     'kubouch',   'Europe/Helsinki']
+    ['elferherrera',     'Europe/London']
+  ]
+}
+
+def "date local" [now] {
+  insert time {|value|
+    let converted = ($now | date to-timezone $value.tz);
+
+    $converted | format date '%c'
+  }
+}
+
+let next_call = ("2021-08-31 15:00:21.290597200 -05:00" | into datetime);
 let people = (nu core-team | date local $next_call);
 
-def say [block] {
-  each {|person|
-    do $block (
-      $person | merge {
-        [[name]; [($person.name | str capitalize)]]
-      }
+def say [closure] {
+  $in | each {|person|
+    do $closure (
+      $person | update name {|row| $row.name | str capitalize}
     )
-  } | str collect (char newline)
+  } | str join (char newline)
 }
 
-$people | say {|person| $"($person.name)'s timezone is ($person.tz)"}
+print ($people | say {|person| $"($person.name)'s timezone is ($person.tz)"})
 
-$" 
+print ($" 
 
-for the next call happening on ($next_call | date format '%c').. in their timezones they would be:
+for the next call happening on ($next_call | format date '%c').. in their timezones they would be:
 
-"
+")
 
-$people | say {|person| $"($person.name)'s: ($person.time)"}
+print ($people | say {|person| $"($person.name)'s: ($person.time)"})