number_with_delimiter(number, delimiter=",") public

Formats a number with a delimiter. Example: 

   number_with_delimiter(12345678) => 12,345,678
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October 25, 2008
2 thanks

Alternative: use 1000.humanize

1.humanize == “1″ 1000000.humanize == “1.000.000″ 1000.12345.humanize == “1.000,12″

http://pragmatig.wordpress.com/2008/10/25/numbers-for-humans-humanize-for-numeric/

April 9, 2009
0 thanks

Deprecation warning for old-style options

You will get a warning if you don’t define your separators as a hash:

DEPRECATION WARNING: number_with_delimiter takes an option hash instead of separate delimiter and precision arguments

So while you can still use that style, it’s not without a scolding.