Small re-factor. Changed if not to unless for code clarity.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/keys.rb b/keys.rb
index 7d50889..3a92a47 100644
--- a/keys.rb
+++ b/keys.rb
@@ -12,8 +12,8 @@ module Puppet::Parser::Functions
 
     hash = arguments[0]
 
-    if not hash.is_a?(Hash)
-      raise(Puppet::ParseError, 'keys(): Requires a hash to work with')
+    unless hash.is_a?(Hash)
+      raise(Puppet::ParseError, 'keys(): Requires hash to work with')
     end
 
     result = hash.keys