[range.view] Make the requirement for constant-time move operations and

destruction explicit in the description of when a type models view.

Author: zygoloid

source/ranges.tex

@@ -902,8 +902,7 @@
 The \libconcept{view} concept specifies the requirements of a \libconcept{range} type
 that has constant time move construction, move assignment, and destruction;
 that is, the cost of these operations is
-% FIXME: Shouldn't this be "independent of the number of elements"?
-not proportional to the number of elements in the \tcode{view}.
+independent of the number of elements in the \tcode{view}.
 
 \begin{itemdecl}
 template<class T>
@@ -915,6 +914,15 @@
 \pnum
 \tcode{T} models \libconcept{view} only if:
 \begin{itemize}
+\item
+\tcode{T} has \bigoh{1} move construction; and
+
+\item
+\tcode{T} has \bigoh{1} move assignment; and
+
+\item
+\tcode{T} has \bigoh{1} destruction; and
+
 \item
 \tcode{copy_constructible<T>} is \tcode{false}, or
 \tcode{T} has \bigoh{1} copy construction; and