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diff --git a/Diff for: ‎2017-04-09-PyDataAmsterdam-xtensor/src/index.html
+1-1 b/Diff for: ‎2017-04-09-PyDataAmsterdam-xtensor/src/index.html
+1-1
diff --git a/Diff for: ‎2017-04-09-PyDataAmsterdam-xtensor/src/xtensor-python.svg
+12-14 b/Diff for: ‎2017-04-09-PyDataAmsterdam-xtensor/src/xtensor-python.svg
+12-14
@@ -960,7 +960,7 @@ <h3>Authoring Python extensions</h3>
 {
     auto sines = xt::sin(m);
     // sines does not actually hold any value, which are only computed upon access
-    return std::accumulate(sines.begin(), sines.end(), 0.0);
+    return std::accumulate(sines.cbegin(), sines.cend(), 0.0);
 }
 
 PYBIND11_PLUGIN(xtensor_python_test)
Original file line number	Diff line number	Diff line change
`@@ -960,7 +960,7 @@ <h3>Authoring Python extensions</h3>`
`960`	`960`	`{`
`961`	`961`	`auto sines = xt::sin(m);`
`962`	`962`	`// sines does not actually hold any value, which are only computed upon access`
`963`		`- return std::accumulate(sines.begin(), sines.end(), 0.0);`
	`963`	`+ return std::accumulate(sines.cbegin(), sines.cend(), 0.0);`
`964`	`964`	`}`
`965`	`965`
`966`	`966`	`PYBIND11_PLUGIN(xtensor_python_test)`