Am 18.07.2017 um 17:07 schrieb Alexey Kulentsov:

I have CSV source with numbers like 40.94, but after reading it and serializing to JSON I have something like 40.93999862670898 because of float representation, so my JSON file is very big. Is this possible to round it back when serializing?

This currently requires manual serialization unfortunately. There is an
open ticket that asks for a similar, although more general, feature:
#431

A more specific one, such as @floatPrecision(2) might be easier to
justify, though, as it could still guarantee that the generated JSON is
valid.