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Reference · stzString

IsQuietEqualTo()

IsQuietEqualTo(pcOther): "quiet" equality -- accept up to ~30% char-level mismatches. Useful for fuzzy comparisons. Uses Levenshtein-style distance with simple thresholding.

Basic examples (2)

Softanza
o1 = new stzString("énoncé")
# strictly different from enonce
? o1.IsEqualTo("enonce")
# but quietly equal
? o1.IsQuietEqualTo("enonce")
# ... and to its uppercase
? o1.IsQuietEqualTo("ÉNONCÉ")
Output
0
1
1

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 686_isequalto.ring(opens in a new tab)

Softanza
o1 = new stzString("SOFTANZA IS AWSOME!")
# case aside: equal
? o1.IsQuietEqualTo("softanza is awsome!")
# one extra char: still quiet
? o1.IsQuietEqualTo("Softansa is aowsome!")
# two extra chars: too loud
? o1.IsQuietEqualTo("Softansa iis aowsome!")
Output
1
1
0

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 685_quiet-equality_of_two_strings.ring(opens in a new tab)

Scope (1)

Softanza
o1 = new stzString("mahmoud fayed")
# too far apart at the default ratio
? o1.IsQuietEqualTo("Mahmood al-feiyed")
# the default ratio
? QuietEqualityRatio()
SetQuietEqualityRatio(0.35)
# close enough at 0.35
? o1.IsQuietEqualTo("Mahmood al-feiyed")
SetQuietEqualityRatio(0.09)
Output
0
0.09
1

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 689_isquietequalto.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
no
takes the position to start from (StartingAt)
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