nim wrapper for variantkey.
This wrapper can encode+decode about 5 million variants per second. The entirety of the API exposed by this library is demonstrated below:
import variantkey
var
chrom = "19"
pos = 3323934'u32
# encode
e = encode(chrom, pos, "A", "T")
assert e.exact
echo e # 10959892387821256704
echo e.decode # (chrom: "19", position: 3323934, reference: "A", alternate: "T", exact: true)
# longer variants are encoded with a hash
e = encode("1", 878111, "CAGGGGCCCCCGGGCTCCGGACCCCCCACCCCGTCCCGGGACTCTGCCCGGCGAGCCCCCCGGAA", "C")
# the reference and alternate are not set upon decoding.
echo e # (chrom: "1", position: 878111, reference: "", alternate: "")