AllItemsAreEither()
On any unknown predicate / type, the side fails silently and returns FALSE rather than crashing -- callers can rely on the method always returning a boolean.
also written: ItemsAreEither · ItemsHaveEither · EachItemIsEither · EachItemIsEitherA · AllItemsHaveEither · EachItemIsEitherAn
Basic examples (2)
Softanza
o1 = new stzList([ 6, -2, 9, 5, -10 ])
? o1.EachItemIsEitherA(:Positive, :Or = :Negative, :Number)
run on 2026-10-02 04:23 inside the library at commit 0e72e2e2c; taken from 21_eachitemiseithera.ring(opens in a new tab)
Softanza
o1 = new stzList([ "to", -4, "be", "or", -8, "not", "to", -10, "be" ])
? o1.EachItemIsEitherA( :Number, :Or, :String )
run on 2026-10-02 04:23 inside the library at commit 0e72e2e2c; taken from 23_eachitemiseithera.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
