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-rw-r--r--doc/ruby/custom_converter.rb9
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/ruby/custom_converter.rb b/doc/ruby/custom_converter.rb
new file mode 100644
index 0000000000..029da08c46
--- /dev/null
+++ b/doc/ruby/custom_converter.rb
@@ -0,0 +1,9 @@
+require 'optparse/date'
+parser = OptionParser.new
+parser.accept(Complex) do |value|
+ value.to_c
+end
+parser.on('--complex COMPLEX', Complex) do |value|
+ p [value, value.class]
+end
+parser.parse!