expose functions from string→double?

[unhammer]

IIUC, this only exposes functions from doubles to strings, not the other way around, but https://github.com/google/double-conversion/blob/master/double-conversion/string-to-double.h has functions from string-to-double – would it make sense to include both directions?

The default read is pretty slow on doubles; there is bytestring-lexing which is faster than default, but I'm guessing double-conversion could be even faster – or perhaps fast_float would be a better option?

[Haskell-mouse]

Thanks, @unhammer for pointing this out. I will think about it and maybe try to make performance tests.