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Reference · stzString

IsBoundedBy()

Same as IsBoundedByCS: IsBoundedByCS / IsBoundedBy: predicate. True iff the content starts with pacBounds[1] AND ends with pacBounds[2].

Basic examples (2)

Softanza
o1 = new stzString("aa***aa**aa***aa")
# it IS bounded by 'aa'
? o1.IsBoundedByCS("aa", TRUE)
Output
1

run on 2026-10-02 04:23 inside the library at commit 0e72e2e2c; taken from 120_isboundedbycs.ring(opens in a new tab)

Softanza
# braced
? StzStringQ("{nnnnn}").IsBoundedBy([ "{", "}" ])
o1 = new stzString("بسم الله الرّحمن الرّحيم")
# opens with bism, closes with arrahim
? o1.IsBoundedBy([ "بسم", "الرّحيم" ])
Output
1
1

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 805_isboundedby.ring(opens in a new tab)

Scope (4)

Softanza
o1 = new stzString("<<word>>")
# it is angle-bounded
? o1.IsBoundedBy(["<<", ">>"])
o1.RemoveTheseBounds("<<",">>")
# stripped
? o1.Content()
Output
1
word

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 587_isboundedby.ring(opens in a new tab)

Softanza
o1 = new stzString('"name"')
# quoted on both sides
? o1.IsBoundedBy([ '"', '"' ])
o2 = new stzString(":name")
# a leading colon is enough
? o2.IsBoundedBy([ ":", NULL ])
Output
1
1

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 692_isboundedby.ring(opens in a new tab)

Softanza
oStr = new stzString("|<--Scope of Life-->|")
? oStr.IsBoundedBy([ "|<--", "-->|" ])
? oStr.TheseBoundsRemoved( "|<--", "-->|" )
oList = new stzList([ "|<--", "Scope", "of", "Life", "-->|" ])
? oList.IsBoundedBy([ "|<--", "-->|" ])
? oList.TheseBoundsRemoved( "|<--", "-->|" )
Output
1
Scope of Life
1
Scope
of
Life

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 515_same_semantics_for_all_softanza_objects.ring(opens in a new tab)

Softanza
o1 = new stzString("{{{ Scope of Life }}}")
# begins with {
? o1.BeginsWith("{")
# ends with }
? o1.EndsWith("}")
# bounded by the pair
? o1.IsBoundedBy([ "{", "}" ])
# one layer removed
? o1.TheseBoundsRemoved("{", "}")
Output
1
1
1
{{ Scope of Life }}

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 691_beginswith.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 · IsBoundedByCS
ST
no
takes the position to start from (StartingAt)
IB
no
takes bounds that are included (IncludingBounds)
XT
yes
the extended form: more parameters than the base method · IsBoundedByXT
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