Packing array of hashes about msgpack-crystal HOT 11 CLOSED

array_of_hash.to_msgpack ?

or by hands

[1, {1 => 2}]

packer.write_array_start(2)
packer.write(1)
packer.write_hash_start(1)
packer.write(1)
packer.write(2)

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I think the JSON::Any is throwing the error

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And the slice

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@kostya seems not to work since I have to overloead matches
@benoist new to crystal and compiled language, could you explain plz

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Welcome to crystal :-). The array of hashes has got values of type JSON::Any and Slice(UInt8) which msgpack does not know how to convert.
You can see the type of array_of_hashes by calling .class on it. It should fit the MessagePack::Type.

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@benoist type is Array(Hash(String, Nil | String | Float32 | Float64 | Time | JSON::Any | Bool | Int32 | Int64 | Int16 | Slice(UInt8)))
array_of_hashes contain array of hash (String,String)

but type overload seem not te be available

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Yes that's what I thought. There are two types that can't be MessagePacked. So either remove them from the hash or convert them to a supported type in the MessagePack::Type alias

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@benoist and what message pack could convert ?
String an Int ?

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MessagePack::Type = Nil | Bool | Int8 | Int16 | Int32 | Int64 | UInt8 | UInt16 | UInt32 | UInt64 | Float32 | Float64 | String | Array(Type) | Hash(Type, Type)

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Did you manage to do what you wanted?

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no, I have temporarily left msgpack (I' use json as my app is unstable)

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