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| author | Daniele Alessandri <suppakilla@gmail.com> | 2010-07-18 21:00:27 +0800 |
|---|---|---|
| committer | Marco Ceresa <ceresa@gmail.com> | 2010-07-18 21:31:53 +0800 |
| commit | e1b6823b7c8daf5a6742ab41cc9bdc585c994bf8 (patch) | |
| tree | 8be0b26082e510bc3d9ad0ff48451986464d0141 /lib | |
| parent | bea4380c30668c9ea0649c5eb2ef2c0ad61096ee (diff) | |
| download | ipaddress-e1b6823b7c8daf5a6742ab41cc9bdc585c994bf8.tar.gz | |
Create an Hash#key alias for Hash#index (Ruby < 1.9)
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) |