BoundTypes.jl

The BoundTypes library helps you to seamlessly design and set rules for data types in your code, making it safer and more reliable.

Installation

To install BoundTypes, simply use the Julia package manager:

] add BoundTypes

Usage

Demonstrate value validation during object construction:

using BoundTypes

struct CoinInfo
    asset::StringPattern{String,pattern"^([A-Z]+)$"}
    network::StringMinLength{String,3}
    address::StringFixedLength{StringPattern{String,pattern"^0x([abcdef0-9]+)$"},40}
    deposit_fee::NumberNonNegative{Float64}
    withdrawal_fee::NumberPositive{Float64}
end

julia> CoinInfo("ETH", "Ethereum", "0xc0ffee254729296a45a3885639ac7e10f9d549", 0.0, 0.01)
CoinInfo("ETH", "Ethereum", "0xc0ffee254729296a45a3885639ac7e10f9d549", 0.0, 0.01)

julia> CoinInfo("eth!", "EM", "0xc0FFE12A2", -1.0, 0.0)
Wrong value: "eth!" must match to regex pattern ^([A-Z]+)$.

Using BoundTypes for serialization and deserialization with Serde.jl:

using Serde
using BoundTypes

struct User
    name::StringMinLength{String,5}
    pass::StringMaxLength{StringMinLength{StringPattern{String,pattern"^[\w@]+$"},10},20}
end

julia> Serde.deser_json(User, """ {"name": "Julia", "pass": "MyBestP@ssw0rdEv3r"} """)
User("Julia", "MyBestP@ssw0rdEv3r")

julia> Serde.deser_json(User, """ {"name": "Julia", "pass": "2ShrtP@ss"} """)
Wrong value: length of the "2ShrtP@ss" must be at least 10 characters (9).

julia> Serde.deser_json(User, """ {"name": "Julia", "pass": "Bad/Password#"} """)
Wrong value: "Bad/Password#" must match to regex pattern ^[\w@]+$.

julia> Serde.to_json(User("Julia", "MyBestP@ssw0rdEv3r"))
"{\"name\":\"Julia\",\"pass\":\"MyBestP@ssw0rdEv3r\"}"