Access Underlying value of each type about bolt-rs HOT 2 CLOSED

There should be TryFrom conversions for Value into all equivalent native types - here's some pseudocode for example:

let some_hashmap: HashMap<String, i64> = HashMap::from_iter( ... );
let bolt_value = Value::from(some_hashmap); // This is a Value::Map
let native_value: HashMap<String, Value> = HashMap::try_from(bolt_value).unwrap();
// Or if your hashmap value type implements TryFrom<Value>...
let native_value: HashMap<String, i64> = HashMap::try_from(bolt_value).unwrap();

Something like that anyway... see here for more conversions. I noticed that some of them aren't showing up on docs.rs, which is a bit strange. Run cargo doc --open on bolt-proto and you should be able to see all of them.

Looking back at this, the Value API could use some simplification - it would be nice to be able to just match on a Value to get the native type:

match value {
    Value::Boolean(b) => ... // where b: bool
    Value::String(s) => ... // where s: String
    _ => ...
}

I will consider doing this at some point so there is no need for the TryFrom conversions - that was sort of an experiment that didn't work out very well.

I'll also see about implementing serde's Serialize trait so people don't need to write custom serializers.

from bolt-rs.

@lucis-fluxum thanks so much for the quick response. This is very helpful indeed.

I have actually found the TryFrom implementation by digging into the code and managed to write a simple serde-json serializer. But I totally agree with you; having that as part of the core crate would be super awesome.

from bolt-rs.