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JuliaLang/JSON.jl

91

JuliaLang / JSON.jl

Julia

JSON parsing and printing


READ ME

JSON.jl

Parsing and printing JSON in pure Julia.

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JSON JSON

Installation: julia> Pkg.add("JSON")

Basic Usage

import JSON

# JSON.parse - string or stream to Julia data structures
s = "{\"a_number\" : 5.0, \"an_array\" : [\"string\", 9]}"
j = JSON.parse(s)
#  Dict{AbstractString,Any} with 2 entries:
#    "an_array" => {"string",9}
#    "a_number" => 5.0

# JSON.json - Julia data structures to a string
JSON.json([2,3])
#  "[2,3]"
JSON.json(j)
#  "{\"an_array\":[\"string\",9],\"a_number\":5.0}"

Documentation

JSON.print(io::IO, s::AbstractString)
JSON.print(io::IO, s::Union{Integer, AbstractFloat})
JSON.print(io::IO, n::Void)
JSON.print(io::IO, b::Bool)
JSON.print(io::IO, a::Associative)
JSON.print(io::IO, v::AbstractVector)
JSON.print{T, N}(io::IO, v::Array{T, N})

Writes a compact (no extra whitespace or identation) JSON representation to the supplied IO.

json(a::Any)

Returns a compact JSON representation as an AbstractString.

JSON.parse(s::AbstractString; dicttype=Dict)
JSON.parse(io::IO; dicttype=Dict)
JSON.parsefile(filename::AbstractString; dicttype=Dict, use_mmap=true)

Parses a JSON AbstractString or IO stream into a nested Array or Dict.

The dicttype indicates the dictionary type (<: Associative) that JSON objects are parsed to. It defaults to Dict (the built-in Julia dictionary), but a different type can be passed to, for example, provide a desired ordering. For example, if you import DataStructures (assuming the DataStructures package is installed), you can pass dicttype=DataStructures.OrderedDict to maintain the insertion order of the items in the object.