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Reference · stzList

FindNext()

FindNext: convenience wrapper used by narrative tests. Accepts either FindNext(item, n) or FindNext(item, :StartingAt = n).

Basic examples (2)

Softanza
o1 = new stzList([ 1, 2, 3, "*", 5, 6, "*", 8, 9 ])
# findnext example 1
? @@( o1.FindNext("*", :StartingAt = 4) )
Output
7

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 173_findnext.ring(opens in a new tab)

Softanza
? @FindNext([ "_", "_", "•", "_", "•", "_", "_" ], "•", :StartingAt = 3)
? @FindNext([ "_", "_", ["•"], "_", ["•"], "_", "_" ], "•", 3)
? @FindNext([ "_", "_", ["•"], "_", ["•"], "_", "_" ], ["•"], 3)
o1 = new stzList([ "_", "_", ["•"], "_", ["•"], "_", "_" ])
? o1.FindNext(["•"], :StartingAt = 3)
Output
5
0
-1
5

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 303_write_a_document_about_it.ring(opens in a new tab)

Scope (4)

Softanza
o1 = new stzList([ 14, 10, 14, 14, 20 ])
# findnext example 1
? @@( o1.FindNext(14, :StartingAt = 1) )
# findnext example 2
? @@( o1.Find(14) )
# findnext example 3
? @@( o1.FindFirst(4) )
Output
3
[ 1, 3, 4 ]
0

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 185_findnext.ring(opens in a new tab)

Softanza
o1 = new stzList([ "_", "_", "♥", "_", "_", "♥", "_" ])
? o1.FindFirst("♥")
? o1.FindLast("♥")
? o1.FindNext("♥", :StartingAt = 3)
? o1.FindPrevious("♥", :StartingAt = 6)
? o1.FindNthNext(1, "♥", :StartingAt = 6)
? o1.FindNthNext(1, "♥", :StartingAt = 5)
? o1.FindNthPrevious(2, "♥", :StartingAt = 7)
Output
3
6
6
3
0
6
3

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 282_findfirst.ring(opens in a new tab)

Softanza
o1 = new stzList([ "_", "_", "•", "_", "•", "_", "_" ])
? o1.FindNext("•", :StartingAt = 3)
? o1.FindNextNth(2, "•", :StartingAt = 2)
? o1.FindNextNth(2, "•", :StartingAt = 3)
? o1.FindPrevious("•", :StartingAt = 5)
? o1.FindPreviousNth(2, "•", :StartingAt = 7)
? o1.FindPreviousNth(1, "•", :StartingAt = 5)
? o1.FindPreviousNth(2, "•", :StartingAt = 5)
Output
5
5
0
3
3
3
0

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 305_findnext.ring(opens in a new tab)

Softanza
o1 = new stzList([ 14, 10, 14, 14, 20 ])
# find example 1
? @@( o1.Find(14) )
# find example 2
? @@( o1.FindFirst(14) )
# find example 3
? @@( o1.FindLast(14) )
# find example 4
? @@( o1.FindNext(14, :StartingAt = 2) )
Output
[ 1, 3, 4 ]
1
4
3

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 177_find.ring(opens in a new tab)

The extensions of this method

Each extension, and whether it exists for this method; an extension that exists combines with the others (FindSTCS).

Extension
Exists
What it adds · The names
Q
no
does what the method does, then returns the object, so the call can be chained
QQ
no
chains on the next, more specific type of object (the Q ladder)
QQQ
no
chains on the most specific type of object (the Q ladder)
QRT
no
returns the result as an object of the requested type
CS
yes
takes a case-sensitivity flag · FindNextCS, FindNextSTCS
ST
yes
takes the position to start from (StartingAt) · FindNextSTCS
IB
no
takes bounds that are included (IncludingBounds)
XT
no
the extended form: more parameters than the base method
XTT
no
yet another extension: a further extended form, after XT
Z
no
includes the position in what it returns
ZZ
no
returns positions as sections, [start, end]
W
no
selects by a condition
WF
no
selects by a condition, with the expressive keywords (@NextItem, @PreviousItem...)
D
no
takes a direction, forward or backward (Directional)
F
no
takes a function (the condition or the update is given as a function); the forms document also uses F for the future form, which defers the action
Many
no
works on a collection of items instead of one (the plural form)
Except
no
takes exceptions, what to leave out (the exceptional form)
U
no
returns the result without duplication

Every example is a test file of the library, run inside the library for this page; only those whose output kept every promise their file wrote are shown.

See also