Retrieve a Global Unit in Amatino Swift - A double-entry accounting library / framework for iOS & MacOS

retrieveGlobalUnit.swift

// Amatino Swift: https://github.com/amatino-code/amatino-swift
// Double entry accounting API

GlobalUnit.retrieve(
    unitId: 5, // The ID for U.S. dollars
    session: session,
    callback: { (error: Error?, unit: GlobalUnit?) in 
        guard error == nil else {
            // Handle errors, e.g. a 404 for an unknown unit
        }
        guard let usd: GlobalUnit = unit else {
            // Should never happen, but guarding against nil is
            // good karma
        }
        // Do stuff with our shiny new unit
        print("Retrieved Global Unit with code: \(usd.code)")
    }
)

Global Units are units of account available across all Entities in Amatino. They are currently all currencies (E.g. USD, EUR, AUD) but will not necessarily be so in future. Hence the generic name.

The session instance used in this example may be seen in the Create Session gist