content: remove echo in mutating maps slide
The duplication is not exact. The first reference is to the
two-value assignment, and the second sentence refers to reads.
However, it is fairly safe to assume that readers will infer that
the explanation is valid for both contexts.
Fixes golang/go#7500
Change-Id: I93903c0be27099ced34a6808cdb4f0a65dc5f2e6
Reviewed-on: https://go-review.googlesource.com/15602
Reviewed-by: Andrew Gerrand <adg@golang.org>
diff --git a/content/moretypes.article b/content/moretypes.article
index a28d012..c104618 100644
--- a/content/moretypes.article
+++ b/content/moretypes.article
@@ -216,9 +216,9 @@
elem, ok = m[key]
-If `key` is in `m`, `ok` is `true`. If not, `ok` is `false` and `elem` is the zero value for the map's element type.
+If `key` is in `m`, `ok` is `true`. If not, `ok` is `false`.
-Similarly, when reading from a map if the key is not present the result is the zero value for the map's element type.
+If `key` is not in the map, then `elem` is the zero value for the map's element type.
_Note_: if `elem` or `ok` have not yet been declared you could use a short declaration form:
