unroll

unroll for-loops (and map into seq/array) at compile-time in nim

Pure Nim score 15/100 · tests present · no docs generated

Summary

nimble install unroll

choosenim install unroll

git clone https://github.com/choltreppe/unroll

Platform	Linux	macOS	Windows	FreeBSD	OpenBSD	NetBSD	Android	iOS	WASM	Embedded
unroll	✓	✓	✓	-	-	-	-	-	-	-

Repository	https://github.com/choltreppe/unroll
Homepage	https://github.com/choltreppe/unroll
Registry Source	nimble_official

for i, v in unroll([2, 3, 4]):
  echo i, ": ", v

gets expanded to:

block:
  echo 0, ": ", 2
block:
  echo 1, ": ", 3
block:
  echo 2, ": ", 4

unroll directly into a seq

let arr =
  for v in unrollMapSeq([4, 5, 6]):
    v + 2

gets expanded into:

let arr = @[
  (4 + 2),
  (5 + 2),
  (6 + 2)
]

works with any type of loop:

const arr2 =
  for v in unrollMapSeq('a' .. 'c'):
    v & "1"

works exactly like unrollMapSeq but produces an array