Merge pull request #9 from miraclesu/fix/price-invert

miraclesu · web-flow · commit b66f393182a2 · 2021-08-21T17:47:34.000+08:00
fix: price invert
diff --git a/entities/price.go b/entities/price.go
@@ -60,8 +60,8 @@ func (p *Price) Adjusted() *Fraction {
 	return p.Fraction.Multiply(p.Scalar)
 }
 
-func (p *Price) Invert() {
-	p.BaseCurrency, p.QuoteCurrency = p.QuoteCurrency, p.BaseCurrency
+func (p *Price) Invert() *Price {
+	return NewPrice(p.QuoteCurrency, p.BaseCurrency, p.Numerator, p.Denominator)
 }
 
 func (p *Price) Multiply(other *Price) (*Price, error) {

Original file line number	Diff line number	Diff line change
`@@ -60,8 +60,8 @@ func (p Price) Adjusted() Fraction {`
`60`	`60`	`return p.Fraction.Multiply(p.Scalar)`
`61`	`61`	`}`
`62`	`62`
`63`		`-func (p *Price) Invert() {`
`64`		`- p.BaseCurrency, p.QuoteCurrency = p.QuoteCurrency, p.BaseCurrency`
	`63`	`+func (p Price) Invert() Price {`
	`64`	`+ return NewPrice(p.QuoteCurrency, p.BaseCurrency, p.Numerator, p.Denominator)`
`65`	`65`	`}`
`66`	`66`
`67`	`67`	`func (p Price) Multiply(other Price) (*Price, error) {`