Import std.core.load

Loadable

std.core.load

interface

Public Interface Loadable

A type that makes itself from a Value, which Load<T> calls in place of filling its Fields.

Examples

// A temperature that loads from a number, and saves as one, rather than as an Object.
Struct Celsius Implements Loadable, Saveable
    Field Degrees: Double

    Public Static Method FromValue(value: Value): Celsius Throws ParseError
        Local degrees = value.AsDouble()
        If degrees == Null
            Throw ParseError(ParseErrorKind.WRONG_TYPE, "a temperature is a number")
        End If

        Return Celsius(degrees)
    End Method

    Public Method ToValue(): Value => Value(Degrees)
End Struct

Expect(Save(Celsius(21.5)) == Value(21.5))
Local loaded = Try Load<Celsius>(Value(30))
Expect(loaded.Degrees == 30.0)

std/core/load.fb, line 72

Static Method FromValue(value: Value): Self Throws ParseError static method #

Makes one from a Value, as Load does.

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