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| author | Adriaan Moors <adriaan.moors@typesafe.com> | 2014-03-12 17:59:33 -0700 |
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| committer | Adriaan Moors <adriaan.moors@typesafe.com> | 2014-03-12 17:59:33 -0700 |
| commit | 51f3ac1f36737606a2921a2abca39c1ca7962324 (patch) | |
| tree | 90afbca2a6c9ca917cc19523b37f0c8c6e6769e1 /08-expressions.md | |
| parent | 78d96eafe9c7404b43da38892134ba380dd77db5 (diff) | |
| download | scala-51f3ac1f36737606a2921a2abca39c1ca7962324.tar.gz scala-51f3ac1f36737606a2921a2abca39c1ca7962324.tar.bz2 scala-51f3ac1f36737606a2921a2abca39c1ca7962324.zip | |
SI-6054 correct eta-expansion in method value using placeholder syntax
Diffstat (limited to '08-expressions.md')
| -rw-r--r-- | 08-expressions.md | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/08-expressions.md b/08-expressions.md index 1eed192cc8..e951350fb3 100644 --- a/08-expressions.md +++ b/08-expressions.md @@ -433,21 +433,21 @@ parameterless method or call-by-name parameter of type parameterlist `()`. ###### Example -The method values in the left column are each equivalent to the -[anonymous functions](#anonymous-functions) on their right. +The method values in the left column are each equivalent to the [eta-expanded expressions](#eta-expansion) on the right. | | | |------------------------------ | --------------------------------------------| |`Math.sin _` | `x => Math.sin(x)` | |`Array.range _` | `(x1, x2) => Array.range(x1, x2)` | |`List.map2 _` | `(x1, x2) => (x3) => List.map2(x1, x2)(x3)` | -|`List.map2(xs, ys)_` | `x => List.map2(xs, ys)(x)` | +|`List.map2(xs, ys)_` | `{ val eta1 = xs; val eta2 = ys; x => List.map2(eta1, eta2)(x) }` | Note that a space is necessary between a method name and the trailing underscore because otherwise the underscore would be considered part of the name. + ## Type Applications ``` |