The library documents itself · Collections & objects

stzListGetter

25 own methods · 11 forms written with extensions, listed under their method

the source: base/list/stzListGetter.ring(opens in a new tab) · All classes · The area reference: Collections & objects

Under each method, its extensions (Q CS XT Z ZZ IB W U): bold and ticked, it exists; struck, it does not. The extensions and what they mean

Examples: 0 come from the library's tests; 15 were composed from each method's signature and run for this page, on a fresh object, for example o1 = new stzListGetter(["a", "b", "c", "d", "e"]). 10 methods have none yet. Examples run on 2026-10-03 12:54 inside the library at commit 0e72e2e2c.

Method

Explanation, as the source carries it

init

initializationno extension

Content

(no comment in the source: the name reads as a sentence) contentin the section content accessQCSXTZZZIBWU

List

(no comment in the source: the name reads as a sentence) listin the section content accessno extension

NumberOfItems

(no comment in the source: the name reads as a sentence) number of itemsin the section content access

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? o1.NumberOfItems()
#--> 5

composed from the signature, run for this page

no extension

IsEmpty

(no comment in the source: the name reads as a sentence) is emptyin the section content access

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? o1.IsEmpty()
#--> 0

composed from the signature, run for this page

no extension

NthItem

(no comment in the source: the name reads as a sentence) nth itemin the section content access

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? o1.NthItem(2)
#--> b

composed from the signature, run for this page

no extension

FirstItem

(no comment in the source: the name reads as a sentence) first itemin the section content access

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? o1.FirstItem()
#--> a

composed from the signature, run for this page

no extension

LastItem

(no comment in the source: the name reads as a sentence) last itemin the section content access

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? o1.LastItem()
#--> e

composed from the signature, run for this page

no extension

CentralItem

(no comment in the source: the name reads as a sentence) central itemin the section content access

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? o1.CentralItem()
#--> c

composed from the signature, run for this page

no extension

NFirstItems

The first n items of the list.also written: Headin the section content access

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? @@( o1.NFirstItems(2) )
#--> [ "a", "b" ]

composed from the signature, run for this page

QCSXTZZZIBWU

NLastItems

The last n items of the list.also written: Tailin the section content access

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? @@( o1.NLastItems(2) )
#--> [ "d", "e" ]

composed from the signature, run for this page

QCSXTZZZIBWU

ItemsAtPositions

items at positionsalso written: ItemsAt

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? @@( o1.ItemsAtPositions([ 2, 3 ]) )
#--> [ "b", "c" ]

composed from the signature, run for this page

no extension

Section

section / rangealso written: ItemsBetween

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? @@( o1.Section(2, 5) )
#--> [ "b", "c", "d", "e" ]

composed from the signature, run for this page

QCSXTZZZIBWU

Range

section / range

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? @@( o1.Range(2, 5) )
#--> [ "b", "c", "d", "e" ]

composed from the signature, run for this page

no extension

UniqueItems

Same as UniqueItemsCS: The unique items of the list, in first-seen order.QCSXTZZZIBWU

RandomItem

One item picked at random.no extension

NRandomItems

n items picked at random.no extension

EveryNthItem

Every nth item of the list (n, 2n, 3n, ...).also written: EveryNth

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? @@( o1.EveryNthItem(2) )
#--> [ "b", "d" ]

composed from the signature, run for this page

QCSXTZZZIBWU

OnlyStrings

Only the STRING items of the list.no extension

OnlyNumbers

Only the NUMBER items of the list.no extension

OnlyLists

Only the LIST items of the list.no extension

OnlyChars

Only the CHAR items of the list.no extension

Pairs

pairs / triplets / windows

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? @@( o1.Pairs() )
#--> [ [ "a", "b" ], [ "b", "c" ], [ "c", "d" ], [ "d", "e" ] ]

composed from the signature, run for this page

QCSXTZZZIBWU

Triplets

pairs / triplets / windows

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? @@( o1.Triplets() )
#--> [ [ "a", "b", "c" ], [ "b", "c", "d" ], [ "c", "d", "e" ] ]

composed from the signature, run for this page

QCSXTZZZIBWU

SlidingWindow

pairs / triplets / windows

composed example

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? @@( o1.SlidingWindow(2) )
#--> [ [ "a", "b" ], [ "b", "c" ], [ "c", "d" ], [ "d", "e" ] ]

composed from the signature, run for this page

QCSXTZZZIBWU