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Re: Most efficient character parsing.
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Re: Most efficient character parsing.


  • Subject: Re: Most efficient character parsing.
  • From: "Jerry W. Walker" <email@hidden>
  • Date: Thu, 16 Feb 2006 07:47:29 -0500

Hi, Chuck,

I'm having trouble parsing this last messagel. Can you explain?

Thanks,
Jerry

On Feb 15, 2006, at 6:22 PM, Chuck Hill wrote:

And use any array of int (or boolean?) pre-populated with 1/0 at the index of the relevant character so you can do:

if (allowable[bees[i]])  /*add character */

instead of multiple if comparisons.

And run tests to see if this is really faster.

Chuck


On Feb 15, 2006, at 2:40 PM, Arturo Pérez wrote:

Not really a WO question but here's what I'd do.

byte [] bees = s.toBytes();
for (int i = 0; ....)

I've done that in the past with great success.

-arturo

On Feb 15, 2006, at 4:43 PM, Eric Stewart wrote:

I've got a WOApp that needs to deal with 200 strings of approximately
250-500 characters per string.


I need to strip out all characters that are not ISO-8859-1 legal
characters. So basically any character that is not decimal ascii
character 9, 10, 13, 32-126, 160-255 need to be removed from the
string. This process is happening roughly 2.5 million times a day and
I'm trying to figure out what is the most efficient way to do it.


Right now I'm tearing the strings apart character-by-character and
checking it's ascii decimal value against the values I know are good.
Is there a more efficient way to do it?


Thanks everyone,

- Eric
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__ Jerry W. Walker,
WebObjects Developer/Instructor for High Performance Industrial Strength Internet Enabled Systems


    email@hidden
    203 278-4085        office






--
__ Jerry W. Walker,
WebObjects Developer/Instructor for High Performance Industrial Strength Internet Enabled Systems


    email@hidden
    203 278-4085        office



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  • Follow-Ups:
    • Re: Most efficient character parsing.
      • From: "Jerry W. Walker" <email@hidden>
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References: 
 >Most efficient character parsing. (From: Eric Stewart <email@hidden>)
 >Re: Most efficient character parsing. (From: Arturo Pérez <email@hidden>)
 >Re: Most efficient character parsing. (From: Chuck Hill <email@hidden>)

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