diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ipaddress/extensions/extensions.rb | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/ipaddress/extensions/extensions.rb b/lib/ipaddress/extensions/extensions.rb index 0d70bda..a474e18 100644 --- a/lib/ipaddress/extensions/extensions.rb +++ b/lib/ipaddress/extensions/extensions.rb @@ -2,6 +2,12 @@ class << Math def log2(n); log(n) / log(2); end end +if RUBY_VERSION =~ /1\.8/ + class Hash + alias :key :index + end +end + class Integer def power_of_2? Math::log2(self).to_i == Math::log2(self) |