Mention comma initializer can be used to concatenate vectors

(inspired by a question on IRC)

1 files changed, 11 insertions, 0 deletions

diff --git a/doc/snippets/Tutorial_AdvancedInitialization_Join.cpp b/doc/snippets/Tutorial_AdvancedInitialization_Join.cpp
new file mode 100644
index 000000000..84e8715cb
--- /dev/null
+++ b/doc/snippets/Tutorial_AdvancedInitialization_Join.cpp
@@ -0,0 +1,11 @@
+RowVectorXd vec1(3);
+vec1 << 1, 2, 3;
+std::cout << "vec1 = " << vec1 << std::endl;
+
+RowVectorXd vec2(4);
+vec2 << 1, 4, 9, 16;;
+std::cout << "vec2 = " << vec2 << std::endl;
+
+RowVectorXd joined(7);
+joined << vec1, vec2;
+std::cout << "joined = " << joined << std::endl;