INNER CODE UNIT · Go

Subtract

expr-lang/expr · vm/runtime/helpers/main.go:293

func Subtract(a, b interface{}) interface{} {
	switch x := a.(type) {
	{{ cases "-" }}
	case time.Time:
		switch y := b.(type) {
		case time.Time:
			return x.Sub(y)
		case time.Duration:
			return x.Add(-y)
		}
	case time.Duration:
		switch y := b.(type) {
		case time.Duration:
			return x - y
		}
	}
	panic(fmt.Sprintf("invalid operation: %T - %T", a, b))
}

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