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Reference · stzString

Nth()

Nth(n[, pcSub]): Nth(n) : the n-th char (1-based, codepoint-aware) Nth(n, pcSub) : position of the n-th occurrence of pcSub Negative n counts from the end (-1 = last).

Basic examples (1)

Softanza
o1 = new stzString("---***---***---***---")
# HowMany('***') is 3
? o1.HowMany("***")
# the 3rd '***' starts at 16
? o1.Nth(3, "***")
# FindLast('***') is also 16
? o1.FindLast("***")
Output
3
16
16

run on 2026-10-02 04:23 inside the library at commit 0e72e2e2c; taken from 242_howmany.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
no
takes a case-sensitivity flag
ST
yes
takes the position to start from (StartingAt) · NthSTDZ, NthSTDZZ
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
yes
includes the position in what it returns · NthZ, NthSTDZ
ZZ
yes
returns positions as sections, [start, end] · NthZZ, NthSTDZZ
W
no
selects by a condition
WF
no
selects by a condition, with the expressive keywords (@NextItem, @PreviousItem...)
D
yes
takes a direction, forward or backward (Directional) · NthSTDZ, NthSTDZZ
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