I have a Dict from parsing a JSON message, and want to convert it into a struct. This works: using StaticArrays const MyFloat = Float64 sys_state_dict = Dict(:time => 0, :t_sim => 0, :sys_state => 0, :e_mech => 0, :orient => [0.530989, 0.466959, -0.466959, -0.53098…

If you are not set on using StructTypes something along these lines could work. The code simply iterates over the names of all fields of your struct and sets them according to corresponding value in the Dict (assuming the key exists!!) julia> module FooingDict mutable struct Foo …

[image] _bernhard: Foo()=new() This was new to me. It works now: using StaticArrays, StructTypes, JSON3 const MyFloat = Float64 sys_state_dict = Dict(:time => 0, :t_sim => 0, :sys_state => 0, :e_mech => 0, :orient => [0.530989, 0.466959, -0.466959, -0.530989…

If you define your struct with Base.@kwdef you can do this: sys_state_dict2struct(dict) = SysState{P}(; pairs(dict)...)

Here’s a general version: struct BasicStruct a::Int b::Int end function conform(::Type{T}, d::Dict)::T where T struct_inputs = [d[field_name] for field_name in fieldnames(T)] return T(struct_inputs...) end dict_data = Dict(:a => 2, :b => 3) > conform(BasicStru…

It works. Different methods have a different performance: sys_state_dict2struct(dict) = SysState{P}(; pairs(dict)...) gives: @btime sys_state_dict2struct($sys_state_dict) 2.638 μs (50 allocations: 3.58 KiB) and SysState{P}(d::Dict) = let ss=SysState{P}() for f in fieldnames(SysState{P}) …

My previous question assumed that the number of entries in the dict are smaller than the number of fields of the struct. The key focus in the new question was how to make the conversion if all fields are present, but in a way that that changes to the struct propagate automatically (do not require a…

How to create a struct from a dict

General Usage

bertschi July 27, 2024, 9:15pm 7

Just curious, but what is the difference between this use case and your previous question?

Topic		Replies	Views
How to convert a Dict to a Struct General Usage question	4	700	July 11, 2024
Create struct from YAML General Usage question	5	1220	August 27, 2022
Convert type to dictionary General Usage	7	2924	May 24, 2021
JSON3.jl struct read Data question , json3	1	911	May 9, 2022
Dynamically defining a struct with default values General Usage macros , metaprogramming , struct	3	592	November 28, 2023

How to create a struct from a dict

Related topics