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put

container.expanding.put

(I 
type
:
integer, i I, v T)
 => 
unit
set element at index `i` to `v`.

`i` must be in the range of indices of the newly added entries.

`put` must be called for all indices of newly added entries.
Precondition
pre
  safety: length <= i.as_i64 < length+n

Type Parameters

0.099dev (GIT hash a1331a3dc7ff37424401d3c7d0dba5be1302516f)
last changed: 2026-07-23