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Fixed given imports and removed reference to toExpr extension (#7608) #7611

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Nov 24, 2019
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Fixed given imports and removed reference to toExpr extension (#7608) #7611

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8 changes: 4 additions & 4 deletions docs/docs/reference/metaprogramming/macros.md
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Expand Up @@ -220,7 +220,7 @@ Here’s a compiler that maps an expression given in the interpreted
language to quoted Scala code of type `Expr[Int]`.
The compiler takes an environment that maps variable names to Scala `Expr`s.
```scala
import given scala.quoted._
import scala.quoted.{given, _}

def compile(e: Exp, env: Map[String, Expr[Int]]): Expr[Int] = e match {
case Num(n) =>
Expand Down Expand Up @@ -308,10 +308,10 @@ def showExpr[T](expr: Expr[T]): Expr[String] = {
}
```
That is, the `showExpr` method converts its `Expr` argument to a string (`code`), and lifts
the result back to an `Expr[String]` using the `toExpr` method.
the result back to an `Expr[String]` using `Expr.apply`.

**Note**: the `toExpr` extension method can be ommited by importing an implicit
conversion with `import given scala.quoted.autolift._`. The programmer is able to
**Note**: Lifting `String` to `Expr[String]` using `Expr(code)` can be ommited by importing an implicit
conversion with `import scala.quoted.autolift.given`. The programmer is able to
declutter slightly the code at the cost of readable _phase distinction_ between
stages.

Expand Down