Go libraray to make working with money safer and easier!
package main
import "github.com/marvincaspar/go-money"
func main() {
oneEuro := money.New(100, money.EUR())
twoEuro, err := oneEuro.Add(oneEuro)
if err != nil {
log.Fatal(err)
}
parties, err := twoEuro.Allocate(1, 1, 1)
if err != nil {
log.Fatal(err)
}
parties[0].Display() // €0.67
parties[1].Display() // €0.67
parties[2].Display() // €0.66
}Get the package:
go get github.com/mc388/go-moneyInitialze Money by using the smalles unit (e.g. 100 represents 1€) and one of the given currency factories.
euro := money.New(100, money.EUR())The following calculations are available:
- Add
- Subtract
- Multiply
- Allocate
Use Add(money) to perform additions.
oneEuro := money.New(100, money.EUR())
twoEuro := money.New(200, money.EUR())
threeEuro, err := oneEuro.Add(twoEuro) // €3, nil
}Use Subtract(money) to perform substractions.
threeEuro := money.New(300, money.EUR())
twoEuro := money.New(200, money.EUR())
oneEuro, err := threeEuro.Subtract(twoEuro) // €1, nil
}Use Multiply(multiplicator) to perform multiplications.
twoEuro := money.New(200, money.EUR())
eightEuro, err := twoEuro.Multiply(4) // €8, nil
}Use Allocate(...ratioX) to allocate money by a given rations without loosing any cent.
oneEuro := money.New(100, money.EUR())
parties, err := oneEuro.Allocate(50, 50)
if err != nil {
log.Fatal(err)
}
parties[0].Display() // €0.50
parties[1].Display() // €0.50
}oneEuro := money.New(100, money.EUR())
parties, err := oneEuro.Allocate(1, 1, 1)
if err != nil {
log.Fatal(err)
}
parties[0].Display() // €0.34
parties[1].Display() // €0.33
parties[2].Display() // €0.33
}The following comparion methods are available:
- Equals
- GreaterThan
- GreaterThanOrEqual
- LessThan
- LessThanOrEqual
Comparison can only performe between the same currency.
oneEuro := money.New(100, money.EUR())
twoEuro := money.New(200, money.EUR())
oneDollar := money.New(100, money.USD())
result1, err := oneEuro.GreaterThan(twoEuro) // false, nil
result2, err := oneEuro.LessThan(twoEuro) // true, nil
result3, err := oneEuro.Equals(oneDollar) // nil, error: Currency don't match
}Run the unit tests with go test -v -covermode=count -coverprofile=coverage.out.
To view the coverage report use go tool cover -func=coverage.out
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