Julia Language JSON Parsing JSON
Example
JSON that has been encoded as a string can easily be parsed into a standard Julia type:
julia> using JSON
julia> JSON.parse("""{
"this": ["is", "json"],
"numbers": [85, 16, 12.0],
"and": [true, false, null]
}""")
Dict{String,Any} with 3 entries:
"this" => Any["is","json"]
"numbers" => Any[85,16,12.0]
"and" => Any[true,false,nothing]
There are a few immediate properties of JSON.jl of note:
- JSON types map to sensible types in Julia: Object becomes
Dict, array becomesVector, number becomesInt64orFloat64, boolean becomesBool, and null becomesnothing::Void. - JSON is an untyped container format: Thus returned Julia vectors are of type
Vector{Any}, and returned dictionaries are of typeDict{String, Any}. - JSON standard does not distinguish between integers and decimal numbers, but JSON.jl does. A number without a decimal point or scientific notation is parsed into
Int64, whereas a number with a decimal point is parsed intoFloat64. This matches closely with the behavior of JSON parsers in many other languages.
