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From "Franz (Jira)" <j...@apache.org>
Subject [jira] [Created] (ARROW-12657) String hex to numeric conversion and bit shifting
Date Wed, 05 May 2021 12:28:00 GMT
Franz created ARROW-12657:
-----------------------------

             Summary: String hex to numeric conversion and bit shifting
                 Key: ARROW-12657
                 URL: https://issues.apache.org/jira/browse/ARROW-12657
             Project: Apache Arrow
          Issue Type: New Feature
            Reporter: Franz


Hi Apache Arrow Community,

thanks for the great work on this project - it is really a game changer. I've started to use
it more frequently since more and more compute kernels became available.

However, I have a current requirement which I can't fulfill, yet. More concretely, I have
hex values as strings. I need to convert them to numeric type (int) and apply bit shifting.

Currently, I can't find a way to do so. I tried type casts (string to int) like 
{code:java}
import pyarrow as pa

array = pa.array(["0x2001591", "0x2000848", "0x2000123"])
array.cast(pa.uint32()){code}
However this results in _ArrowInvalid: Failed to parse string: '0x2000123' as a scalar of
type uint32._ 

Moreover, I will need to apply bit shifting once converted. I'm not sure if there is anything
comparable in the compute kernels, yet.

Thanks for any help in advance.
 
 



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