Softanza
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Softanza
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Reference · stzString

ReplaceFirst()

replace nth / first / last

Basic examples (2)

Softanza
o1 = new stzString("Softanza loves simplicity")
# everything from position 10 becomes arrives!
? o1.ReplaceFirstQ( o1.Section(10, :LastChar), "arrives!").Content()
Output
Softanza arrives!

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 803_replacefirst.ring(opens in a new tab)

Softanza
o1 = new stzString("Tunisia is back! People united.")
o1.ReplaceAll("People", "Tunisians")
# crowd renamed
? o1.Content()
# 3 to 7
? o1.Section(3, 7)
# 7 to 3, normalized
? o1.Section(7, 3)
# 3 to the end of its word
? o1.Section(:From = 3, :To = :EndOfWord)
# 12 to the end of its word (bang included)
? o1.Section(:From = 12, :To = :EndOfWord)
# 9 to the end of the sentence
? o1.Section(:From = 9, :To = :EndOfSentence)
# first char to end of string
? o1.Section(:From = :FirstChar, :To = :EndOfString)
o1.ReplaceFirst("Tunisia", :With = "Egypt")
o1.Replace("Tunisians", :With = "Egyptians")
# and a whole new country
? o1.Content()
Output
Tunisia is back! Tunisians united.
nisia
nisia
nisia
back!
is back! Tunisians united.
Tunisia is back! Tunisians united.
Egypt is back! Egyptians united.

run on 2026-10-02 04:24 inside the library at commit 0e72e2e2c; taken from 793_content.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 · ReplaceFirstQ, ReplaceFirstCSQ
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 · ReplaceFirstCS, ReplaceFirstCSQ
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