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Reference · stzList

Are()

essential methods for submodule support

also written: ItemsAre

Basic examples (2)

Softanza
o1 = new stzList([ 2, 4, 8 ])
? o1.EachItemIsA(:Number)
? o1.ItemsAre([ :Positive, :Even, :Numbers ])
Output
1
1

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 03_eachitemisa.ring(opens in a new tab)

Softanza
? Q([ "واحد", "اثنان", "ثلاثة" ]).Are(:Strings)
? Q([ "واحد", "اثنان", "ثلاثة" ]).Are([ :Arabic, :Strings ])
? Q([ "واحد", "اثنان", "ثلاثة" ]).Are([ :ArabicScript, :RightToLeft, :Texts ])
Output
1
1
1

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 345_are.ring(opens in a new tab)

Scope (3)

Softanza
# a Han text
? StzTextQ("朋友们").IsHanScript()
# all three are Han texts
? Q([ "你好", "亲", "朋友们" ]).Are([ :HanScript, :Texts ])
Output
1
1

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 994_ishanscript.ring(opens in a new tab)

Softanza
? Q([ 1, 2, 3 ]).Are(:Numbers)
? Q([ -2, -4, -8 ]).Are([ :Even, :Negative, :Numbers ])
? Q([ 2, 4, 8 ]).Are([ :Even, :Numbers ])
? Q([ 2, 4, 8 ]).Are([ :Even, :Positive, :Numbers ])
? Q([ "(",";", ")" ]).Are([ :Punctuation, :Chars ])
Output
1
1
1
1
1

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 353_are.ring(opens in a new tab)

Softanza
# chars of 12309 are numbers
? Q("12309").CharsQ().NumbrifiedQ().Are(:Numbers)
# chars of 248 are even positive numbers
? Q("248").CharsQ().NumberifiedQ().Are([ :Even, :Positive, :Numbers ])
# these are punctuation chars
? Q([ ",", ":", ";" ]).Are([ :Punctuation, :Chars ])
Output
1
1
1

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 451_what_you_think_is_what_you_write.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