Re: [Haskell-cafe] Creating a instance for (Storable Text)

Maybe you want to use Data.Serialize? Encode to and from a bytestring. On Nov 24, 2016 1:24 PM, "Michael Snoyman" wrote:

It can't be done. Instances of Storable need to have a fixed serialized size, and Text values don't.

On Thu, Nov 24, 2016, 8:21 PM Cody Goodman wrote:

...

Any ideas on how I'd write this instance? I know for it to be storable it needs a size, couldn't I just get the length of the text? Has anyone did anything similar?

I ran into a surprise when trying to use storable-record and derive-storable and tried using them with a record that contained a Text field.

My end goal is having a vector of records that could contain Text, UTCTime, or other similarly complex types which I can write as an mmap to disk and then read back to the original format.

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