Interpolate strings (#109)

xiaowei-zhang · web-flow · commit 0c6691b8c668 · 2020-04-05T16:42:30.000+02:00
Method + in class Int is deprecated (since 2.13.0): Adding a number and a String is deprecated. Use the string interpolation `s"$num$str"`
diff --git a/src/main/scala/scalatutorial/sections/ObjectOrientedProgramming.scala b/src/main/scala/scalatutorial/sections/ObjectOrientedProgramming.scala
@@ -103,7 +103,7 @@ object ObjectOrientedProgramming extends ScalaTutorialSection {
    *     )
    *
    *   def makeString(r: Rational) =
-   *     r.numer + "/" + r.denom
+   *     s"${r.numer}/${r.denom}"
    * }}}
    *
    * And then:
@@ -133,7 +133,7 @@ object ObjectOrientedProgramming extends ScalaTutorialSection {
    *       new Rational(numer * r.denom + r.numer * denom, denom * r.denom)
    *     def mul(r: Rational) = ...
    *     ...
-   *     override def toString = numer + "/" + denom
+   *     override def toString = s"$numer/$denom"
    *   }
    * }}}
    *

Original file line number	Diff line number	Diff line change
`@@ -103,7 +103,7 @@ object ObjectOrientedProgramming extends ScalaTutorialSection {`
`103`	`103`	`* )`
`104`	`104`	`*`
`105`	`105`	`* def makeString(r: Rational) =`
`106`		`- * r.numer + "/" + r.denom`
	`106`	`+ * s"${r.numer}/${r.denom}"`
`107`	`107`	`* }}}`
`108`	`108`	`*`
`109`	`109`	`* And then:`
`@@ -133,7 +133,7 @@ object ObjectOrientedProgramming extends ScalaTutorialSection {`
`133`	`133`	`* new Rational(numer * r.denom + r.numer * denom, denom * r.denom)`
`134`	`134`	`* def mul(r: Rational) = ...`
`135`	`135`	`* ...`
`136`		`- * override def toString = numer + "/" + denom`
	`136`	`+ * override def toString = s"$numer/$denom"`
`137`	`137`	`* }`
`138`	`138`	`* }}}`
`139`	`139`	`*`