更改池化DataArray的级别

Question

我正在寻找一种修改DataArray级别的方法：

result = pool(["a", "a", "b"])
levels(result) = ["A", "B"]

Answer 1

作为一种快速而肮脏的解决方案，您可以更改对象的pool字段 - 它恰好是可变的。

result.pool = [ "A", "B" ]

result
# 3-element PooledDataArray{ASCIIString,Uint8,1}:
# "A"
# "A"
# "B"

xdump( result )
# PooledDataArray{ASCIIString,Uint8,1} 
#   refs: Array(Uint8,(3,)) Uint8[0x01,0x01,0x02]
#   pool: Array(ASCIIString,(2,)) ASCIIString["a","b"]