Install yasnippet and vala-snippets packages

elpa/yasnippet-20160924.2001/snippets/ruby-mode/cls

@@ -0,0 +1,11 @@
+#name : class ... end
+#contributor : hitesh <hitesh.jasani@gmail.com>
+#group : definitions
+# --
+class ${1:`(let ((fn (capitalize (file-name-nondirectory
+                                 (file-name-sans-extension
+				 (or (buffer-file-name)
+				     (buffer-name (current-buffer))))))))
+             (replace-regexp-in-string "_" "" fn t t))`}
+  $0
+end