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Re: [ydn-javascript] String substitution

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  • Peter Foti
    Thanks. I m surprised this sort of thing is not more common. Peter ... From: Gopalarathnam Venkatesan To: foti-1@comcast.net Cc:
    Message 1 of 3 , Nov 1, 2006
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      Thanks.  I'm surprised this sort of thing is not more common.
       
      Peter
       
      ----- Original Message -----
      Sent: Wednesday, November 01, 2006 11:43 PM
      Subject: Re: [ydn-javascript] String substitution

      foti-1@comcast. net wrote:
      >
      >
      > I'm looking for something that will let me add placeholders to a string,
      > and then substitute those with values. For example, the string might
      > look like this:
      >
      > "Hello {0}. There were {1} results. You can delete {1} objects."
      >
      > And {0} would be replaced by the first argument, {1} by the second
      > argument, and so on. Something like:
      >
      > substitute(" Hello {0}. There were {1} results. You can delete {1}
      > objects.", "Peter", 5);
      >
      > Which would produce:
      >
      > Hello Peter. There were 5 results. You can delete 5 objects.
      >
      > Anyone know of anything that does something like this?

      Hi Peter:

      AFAIK there is none, but its not difficult to write one. Here's one way
      to write it:

      function myprintf()
      {
      var i, fmt = arguments[0] , n = arguments.length, s;

      for (i = 1, s = fmt; i < n; i++) {
      s = s.replace("{ "+(i-1)+" }", arguments[i] , "g");
      }

      return s;
      }

      myprintf("Hello {0}. There were {1} results. You can delete {1}
      objects.", "Peter", 5);
      --
      Gopalarathnam Venkatesan

      http://gopalarathna m.com/

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