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() and execution speed [message #44955] Fri, 29 July 2005 05:42 Go to next message
Gert is currently offline  Gert
Messages: 11
Registered: December 2001
Junior Member
Hi,

I just played with and array of structures, each structure containing a
(float) images.
If i do

SomeProc, psData[NumStruct].flIm[1:1000]

or

SomeProc, (psData[NumStruct].flIm)[1:1000]

then the result is the same, but the second runs much slower. Anyone knows
why this is so? My guess is that in the second run, a copy of the array is
made.

I would be interested to find out if there are more 'pitfalls' out there.

good WE,

Gert


--

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Re: () and execution speed [message #45076 is a reply to message #44955] Mon, 01 August 2005 18:29 Go to previous message
marc schellens[1] is currently offline  marc schellens[1]
Messages: 183
Registered: January 2000
Senior Member
One possible pitfall here is, that as soon as the braced
expression is more dimensional the results might differ.
Ie. NumStruct is an array.

Cheers,
marc

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