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-rw-r--r--lib/overwrite.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/overwrite.rb b/lib/overwrite.rb
index c92ad2b..cef5758 100644
--- a/lib/overwrite.rb
+++ b/lib/overwrite.rb
@@ -22,6 +22,14 @@ class Numeric
end
end
+class Float
+ # round to n significant digits
+ # http://stackoverflow.com/questions/8382619/how-to-round-a-float-to-a-specified-number-of-significant-digits-in-ruby
+ def signif(n)
+ Float("%.#{n}g" % self)
+ end
+end
+
module Enumerable
# @return [Array] only the duplicates of an enumerable
def duplicates