Softanza
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Softanza
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Reference · stzDate

AddDays()

enhanced arithmetic operations

Basic examples (2)

Softanza
oDate = StzDateQ("01/01/2025")
oDate.AddDays(30)
? oDate.Date()
Output
31/01/2025

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 08_adding_days_to_a_date.ring(opens in a new tab)

Softanza
o = StzDateQ("15/03/2024")
o.AddDays(20)
# +20 days crosses into April -> 04/04/2024
? o.Date()
p = StzDateQ("15/03/2024")
p.AddMonths(2)
# +2 months -> 15/05/2024
? p.Date()
q = StzDateQ("15/03/2024")
q.AddYears(1)
# +1 year -> 15/03/2025
? q.Date()
Output
04/04/2024
15/05/2024
15/03/2025

run on 2026-10-02 04:22 inside the library at commit 0e72e2e2c; taken from 00_date_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 · AddDaysQ
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