If there's only one argument in a ctor, mark it explicit to make it less

easy to fall into implicit conversions.

diff --git a/.idea/encodings.xml b/.idea/encodings.xml
new file mode 100644 (file)
index 0000000..15a15b2
--- /dev/null
+++ b/.idea/encodings.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with NO BOM" />
+</project>
\ No newline at end of file