Function Repository Resource:

BitListToByteArray

Convert a list of bits to a byte array

Contributed by: Arnoud Buzing

ResourceFunction["BitListToByteArray"][bits]

converts the list bits to a ByteArray.

Details and Options

The output typically requires 64 times less memory than the input.

Create a list of bits:

In[1]:=

Out[1]=

Convert to a byte array:

In[2]:=

Out[2]=

Compare the number of bytes needed to represent the expressions:

In[3]:=

Out[3]=

For larger bit arrays the relative memory compression does approach a factor of 64:

In[4]:=

Out[6]=