`std/maps`

Phrases

`maps.Size [m: map of value to value]`

Number of keys

Gives: number
Contexts: node, main, check, look
Kind: phrase, native
Source: maps/maps.synod:3
Examples: maps/scores

`maps.Keys [m: map of value to value]`

Keys in ascending order

Gives: list of the key type of `m`
Contexts: node, main, check, look
Kind: phrase, native
Source: maps/maps.synod:6
Examples: maps/scores

`maps.Without [k: value] from [m: map of value to value]`

A copy without key k

Gives: same as `m`
Contexts: node, main, check, look
Kind: phrase, native
Source: maps/maps.synod:9
Examples: maps/scores

`maps.KeysByValue [m: map of value to value]`

Keys ordered by ascending value, ties by key

Gives: list of the key type of `m`
Contexts: node, main, check, look
Kind: phrase, native
Source: maps/maps.synod:12
Examples: maps/scores

Examples

scores

Shows maps.Size, maps.Keys, maps.Without and maps.KeysByValue on a map of scores

# package main
# Shows maps.Size, maps.Keys, maps.Without and maps.KeysByValue on a map of scores
use std/lesson
use std/maps
use std/sim
use std/text

define main
  set scores to {}
  set item "ana" of scores to 30
  set item "bo" of scores to 10
  set item "cy" of scores to 20
  set best to (maps.KeysByValue scores)
  set without to (maps.Without "bo" from scores)
  lesson.Note (text.Join {"players ", (text.From (maps.Size scores)), ": ", (text.Join {(item 0 of (maps.Keys scores)), ", ", (item 1 of (maps.Keys scores)), ", ", (item 2 of (maps.Keys scores))})})
  lesson.Note (text.Join {"lowest score first: ", (text.Join {(item 0 of best), ", ", (item 1 of best), ", ", (item 2 of best)})})
  lesson.Note (text.Join {"after removing bo: ", (text.From (maps.Size without))})
  sim.StopAt 1s