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Reference · stzHashList

TheseItemsZ()

when the value is a list, finding the given item inside that tlist

also written: TheseItemsInListZ · TheseItemsInListsZ

Basic examples (1)

Softanza
o1 = new stzHashList([
	:One	= :NONE,
	:Two  	= [ :is, :will, :can, :some, :can ],
	:Three	= :NONE,
	:Four	= [ :can, :will ],
	:Five	= [ :will ]
])
? @@( o1.FindItem(:can) ) + NL
? @@( o1.ItemZ(:can) ) + NL
? @@( o1.FindTheseItems([ :can, :will ]) ) + NL
? @@( o1.TheseItemsZ([ :can, :will ]) ) + NL
Output
[ [ 2, [ 3, 5 ] ], [ 4, [ 1 ] ] ]

[ "can", [ [ 2, [ 3, 5 ] ], [ 4, [ 1 ] ] ] ]

[ [ 2, 3 ], [ 2, 5 ], [ 4, 1 ], [ 2, 2 ], [ 4, 2 ], [ 5, 1 ] ]

[ [ "can", [ [ 2, [ 3, 5 ] ], [ 4, [ 1 ] ] ] ], [ "will", [ [ 2, [ 2 ] ], [ 4, [ 2 ] ], [ 5, [ 1 ] ] ] ] ]

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 09_finding_items_inside_values_that_are_lists.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
yes
does what the method does, then returns the object, so the call can be chained · TheseItemsZQ
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
yes
returns the result as an object of the requested type · TheseItemsZQRT
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