> > Types like seq and string do it...
>
> Actually they don't....
Yea, seems like so, made similar benchmark for `seq`, (for `table` results are
similar). Couple orders of magnitude faster with `ref` in `proc get_prices*():
ref seq[float] =`.
const N = 100_000
proc load_prices_slow*(): seq[float] =
for i in 1..N: result.add 1.0
var cached_stock_prices: ref seq[float] = nil
proc get_prices*(): seq[float] =
if cached_stock_prices.is_nil:
cached_stock_prices.new
cached_stock_prices[] = load_prices_slow()
echo "loaded"
cached_stock_prices[]
# Usage - the `get_prices` functino called many times in different places.
echo "starting calculations"
for _ in 1..1000:
for i in 1..100:
discard get_prices()[i]
echo "done"
Run
