Err, integers! - resolved

Ello, first off; sorry I really couldn't think of a subject for this thread!
And now for the question... :D I was reading some code on VBnet and found a piece of code that has baffled me.

VB Code:

'if found is at 200, then add some more array elements
    If found Mod 200 = 0 Then ReDim Preserve fArray(found + 200)

You see it? I don't understand the point of using 'Mod 200 = 0', what's wrong with just using 'found = 200'? :confused: Is there some sort of advantage noone has told me about with using Mod this way?
If anyone can explain why the coder has done this it'd make my day :), well not quite, but nearly. :p
-Cheers

Using found Mod 200 does the Redim when found is 200, 400, 600, etc.

Quote:

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Originally posted by adzzzz
Ello, first off; sorry I really couldn't think of a subject for this thread!
And now for the question... :D I was reading some code on VBnet and found a piece of code that has baffled me.

VB Code:

'if found is at 200, then add some more array elements
    If found Mod 200 = 0 Then ReDim Preserve fArray(found + 200)

You see it? I don't understand the point of using 'Mod 200 = 0', what's wrong with just using 'found = 200'? :confused: Is there some sort of advantage noone has told me about with using Mod this way?
If anyone can explain why the coder has done this it'd make my day :), well not quite, but nearly. :p
-Cheers

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yeah... perhaps the coder wanted to make the code look harder than it needs to be... or maybe it was an example on a use for the mod operator

What that does is redimension the array each time the array size gets to 200, 400, 600, 800, etc etc

It is more efficient than redimming every single time. That code is a bit hard to read since its all in one line.

i guess it is a case of bad commenting

Yer, I knew what the Mod did but I just don't see the point in using that instead of found = 200? Maybe it's like kleinma said, I dunno.
-Cheers

It is looking to see if 200 divides into the "variable" found (whatever the value) evenly..


Rudy

Quote:

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Used to divide two numbers and return only the remainder.

Syntax

result = number1 Mod number2

The Mod operator syntax has these parts:

Part Description
result Required; any numericvariable.
number1 Required; anynumeric expression.
number2 Required; any numeric expression.


Remarks

The modulus, or remainder, operator divides number1 by number2 (rounding floating-point numbers to integers) and returns only the remainder as result. For example, in the followingexpression, A (result) equals 5.

A = 19 Mod 6.7

Usually, thedata type of result is aByte, Byte variant,Integer, Integer variant,Long, orVariant containing a Long, regardless of whether or not result is a whole number. Any fractional portion is truncated. However, if any expression isNull, result is Null. Any expression that isEmpty is treated as 0.

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Quote:

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Originally posted by adzzzz
Yer, I knew what the Mod did but I just don't see the point in using that instead of found = 200? Maybe it's like kleinma said, I dunno.
-Cheers

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Do you understand now that while If found = 200 does it only once while if found Mod 200 = 0 does it multiple times?

AHH! So the condition would still be true if it was 400 or 800 as well, I see. Didn't read it right, cheers :)