Find structure in array

[Carl Vanderpal]

Having a stumpt moment, how to I find what position in the array 'DEF' is in?

Thanks
<cfscript>

aBooks = ArrayNew(1);

stBooks[1] = StructNew();
stBooks[1].Name = "ABC";
stBooks[1].Chapters = 50;

aBooks[2] = ArrayNew(1);
stBooks[2] = StructNew();
stBooks[2].Name = "DEF";
stBooks[2].Chapters = 40;

aBooks = ArrayNew(1);
stBooks[3] = StructNew();
stBooks[3].Name = "HIJ";
stBooks[3].Chapters = 27;

aBooks[4] = ArrayNew(1);
stBooks[4] = StructNew();
stBooks[4].Name = "KLM";
stBooks[4].Chapters = 36;
</cfscript>


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[Ben Lowndes]

Hi,

Your sample code doesn't produce a meaningful array, but I can see
what you're trying to do.

The simplest way would be to cfloop over the array looking at each
name element, e.g:

<cfloop from="1" to="#arrayLen(aBooks)#" index="iBook">
   <cfif aBooks[iBook].name EQ "DEF">
        <cfset bookDEF = iBook />
   </cfif>
</cfloop>

Or you could use one of CF's built in functions, look at structFind()
or structFindValue() as I believe these will work on arrays as well as
structs.

Deciding which to use may depend on performance, so I'd test both
techniques if the array is large.

Ben

On 12/28/05, Carl Vanderpal <carl.vanderpal@...> wrote:

> Having a stumpt moment, how to I find what position in the array 'DEF' is in?
>
>  Thanks
>  <cfscript>
>
>  aBooks = ArrayNew(1);
>
>  stBooks[1] = StructNew();
>  stBooks[1].Name = "ABC";
>  stBooks[1].Chapters = 50;
>
>  aBooks[2] = ArrayNew(1);
>  stBooks[2] = StructNew();
>  stBooks[2].Name = "DEF";
>  stBooks[2].Chapters = 40;
>
>  aBooks = ArrayNew(1);
>  stBooks[3] = StructNew();
>  stBooks[3].Name = "HIJ";
>  stBooks[3].Chapters = 27;
>
>  aBooks[4] = ArrayNew(1);
>  stBooks[4] = StructNew();
>  stBooks[4].Name = "KLM";
>  stBooks[4].Chapters = 36;
> </cfscript>
>
>
> ====================================
> Postal: Po Box 3462 Dural, NSW 2158
> Email: mailto:carl.vanderpal@...
> FireFly Internet Phone: [phone]   --- You are currently subscribed to cfaussie as: ben.lowndes@... To unsubscribe send a blank email to leave-cfaussie-8745J@...  Aussie Macromedia Developers: http://lists.daemon.com.au/

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[Taco Fleur - Pacific Fox]

Loop over the array and find the position, i.e.

 

found = 0;

for ( i = 1; i LTE arrayLen( stBooks ); i = i + 1 )

{

    if ( stBooks[ i ] IS 'DEF' ) // Or use compare() if you are after a case match

    {

        found = i;

        break;

    }

}

 

Kind regards,

 

Taco Fleur - Chief Executive Officer
Pacific Fox http://www.pacificfox.com.au an industry leader with commercial IT experience since 1994 …

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---

From: bounce-cfaussie-21343@... [mailto:bounce-cfaussie-21343@...] On Behalf Of Carl Vanderpal
Sent: Wednesday, 28 December 2005 4:59 PM
To: CFAussie Mailing List
Subject: [cfaussie] Find structure in array

Having a stumpt moment, how to I find what position in the array 'DEF' is in?

Thanks
<cfscript>

aBooks = ArrayNew(1);

stBooks[1] = StructNew();
stBooks[1].Name = "ABC";
stBooks[1].Chapters = 50;

aBooks[2] = ArrayNew(1);
stBooks[2] = StructNew();
stBooks[2].Name = "DEF";
stBooks[2].Chapters = 40;

aBooks = ArrayNew(1);
stBooks[3] = StructNew();
stBooks[3].Name = "HIJ";
stBooks[3].Chapters = 27;

aBooks[4] = ArrayNew(1);
stBooks[4] = StructNew();
stBooks[4].Name = "KLM";
stBooks[4].Chapters = 36;
</cfscript>


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[Carl Vanderpal]

On 12/29/05, Taco Fleur - Pacific Fox <taco.fleur@...> wrote:

Loop over the array and find the position, i.e.

 

found = 0;

for ( i = 1; i LTE arrayLen( stBooks ); i = i + 1 )

{

    if ( stBooks[ i ] IS 'DEF' ) // Or use compare() if you are after a case match

    {

        found = i;

        break;

    }

}

Thanks Taco...& Ben

====================================
Postal: Po Box 3462 Dural, NSW 2158
Email: mailto:carl.vanderpal@...
FireFly Internet Phone: [phone] --- You are currently subscribed to cfaussie as: lists@... To unsubscribe send a blank email to leave-cfaussie-23165F@... Aussie Macromedia Developers: http://lists.daemon.com.au/

[Dawes, Chris]

use eq instead of is... much quicker.

Cheers,

Chris Dawes
Web Systems Administrator 
Information Technology

Tel: [phone]
Fax: [phone]
Mob: [phone]

Level 3, Tower 1 Darling Park
201 Sussex Street
Sydney, NSW 2000

 

---

From: bounce-cfaussie-11844@... [mailto:bounce-cfaussie-11844@...] On Behalf Of Carl Vanderpal
Sent: Thursday, 29 December 2005 6:32 PM
To: CFAussie Mailing List
Subject: [cfaussie] RE: Find structure in array

On 12/29/05, Taco Fleur - Pacific Fox <taco.fleur@...> wrote:

Loop over the array and find the position, i.e.

 

found = 0;

for ( i = 1; i LTE arrayLen( stBooks ); i = i + 1 )

{

    if ( stBooks[ i ] IS 'DEF' ) // Or use compare() if you are after a case match

    {

        found = i;

        break;

    }

}

Thanks Taco...& Ben

====================================
Postal: Po Box 3462 Dural, NSW 2158
Email: mailto:carl.vanderpal@...
FireFly Internet Phone: [phone] --- You are currently subscribed to cfaussie as: chris_dawes@... To unsubscribe send a blank email to leave-cfaussie-23165F@... Aussie Macromedia Developers: http://lists.daemon.com.au/

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