# array-of Create a mutable flat array of `$n` copies of `$fill` in a single allocation. Size `0` yields `@{}`; a fractional `$n` truncates toward zero. ## Syntax

[array-of $n $fill]

## Parameters - `$n` — Size (number). `%Err{:message expected number argument}` when not a number. - `$fill` — Value copied into every slot. ## Examples

[array-of 3 :x]   # → @{:x :x :x}
[array-of 2 7]    # → @{7 7}
[array-of 0 :x]   # → @{}

## Returns A mutable flat array with `$n` slots all holding `$fill`; use `aget`/`aset` to read and mutate, or `replicate` for an immutable vector. ## See Also `array`, `aget`, `aset`, `replicate`