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Reference · stzMatrix

ReplaceSection()

replacement by many elements

Basic examples (1)

Softanza
oM = new stzMatrix([ [1,2,3], [4,5,6], [7,8,9] ])
oM.ReplaceElementsAt([ [1,3], [2,2], [3,1] ], :By = 0)
# ReplaceElementsAt, single value
? @@(oM.Content())
oM2 = new stzMatrix([ [1,2,3], [4,5,6], [7,8,9] ])
oM2.ReplaceElementsAt([ [1,3], [2,2], [3,1] ], :By = [ 10, 20, 30 ])
# ...and by many
? @@(oM2.Content())
oM3 = new stzMatrix([ [14,20,16], [14,20,16], [17,23,19] ])
oM3.ReplaceSection([1,1], [2,2], :By = 0)
# ReplaceSection
? @@(oM3.Content())
Output
[ [ 1, 2, 0 ], [ 4, 0, 6 ], [ 0, 8, 9 ] ]
[ [ 1, 2, 10 ], [ 4, 20, 6 ], [ 30, 8, 9 ] ]
[ [ 0, 0, 16 ], [ 0, 0, 16 ], [ 17, 23, 19 ] ]

run on 2026-10-02 04:23 inside the library at commit 0e72e2e2c; taken from matrix_dead_calls_narrated.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 · ReplaceSectionQ
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