'SizeOf' array in PureBasic?

Mistrel · Post by **Mistrel** » Thu Jun 04, 2009 10:27 pm

Is there a way to return the size of an array in bytes in PureBasic similar to how SizeOf works in C?

cxAlex · Post by **cxAlex** » Thu Jun 04, 2009 10:40 pm

Macro SizeOfArray(_Array)
  PeekI(@_Array-SizeOf(Quad))
EndMacro

Dim MyArray(10,10)

Debug SizeOfArray(MyArray())

Mistrel · Post by **Mistrel** » Thu Jun 04, 2009 11:01 pm

In PB x64 the output is:

Code: Select all

2338038273043070997

srod · Post by **srod** » Thu Jun 04, 2009 11:12 pm

ArraySize() will give you the upper bound for an individual dimension if this helps? My apologies if you are already aware of this function.

ts-soft · Post by **ts-soft** » Thu Jun 04, 2009 11:12 pm

Code: Select all

CompilerIf #PB_Compiler_Processor = #PB_Processor_x64
Macro SizeOfArray(_Array)
  PeekI(@_Array-SizeOf(Quad) * 2)
EndMacro
CompilerElse
Macro SizeOfArray(_Array)
  PeekI(@_Array-SizeOf(Quad))
EndMacro
CompilerEndIf

Dim MyArray(10,10)

Debug SizeOfArray(MyArray())

Demivec · Post by **Demivec** » Fri Jun 05, 2009 2:53 am

Here's my attempt:

Code: Select all

Macro SizeOfArray(_Array, type, dimension = 1)
  (ArraySize(_Array,dimension) + 1) * SizeOf(type)
EndMacro

Dim MyArray(10,10)

Debug SizeOfArray(MyArray(), Integer, 1) * SizeOfArray(MyArray(), Integer, 2)


Dim Another.BITMAP(15)

Debug SizeOfArray(Another(), BITMAP)

thearr · Post by **thearr** » Fri Jun 05, 2009 5:19 am

My way:

Code: Select all

Procedure SizeOfArray(*Array)
  ProcedureReturn PeekL(*Array-8)*PeekL(*Array-20)
EndProcedure

Dim MyArray.l(10,10)
Debug SizeOfArray(MyArray())
Debug 11*11*4

Post by **freak** » Fri Jun 05, 2009 11:17 am

Funny that you guys still prefer peeking around undocumented memory locations even after we added the ArraySize() command. :roll:

netmaestro · Post by **netmaestro** » Sat Jun 06, 2009 5:55 pm

Yes, a very unexpected topic to be sure

Fluid Byte · Post by **Fluid Byte** » Sat Jun 06, 2009 7:01 pm

Am I missing something? I thought they wanted to obtain the size in bytes. That is something that can't be done with ArraySize() since it only returns the number of elements. Sure you could multiply with that value but there is no ArrayType() command. Not yet

Mistrel · Post by **Mistrel** » Sat Jun 06, 2009 10:33 pm

Fluid Byte wrote:Am I missing something? I thought they wanted to obtain the size in bytes. That is something that can't be done with ArraySize() since it only returns the number of elements. Sure you could multiply with that value but there is no ArrayType() command. Not yet

Fluid Byte is correct. I'm interested in the size of the array in bytes.

fsw · Post by **fsw** » Sat Jun 06, 2009 11:24 pm

Mistrel wrote:
Fluid Byte wrote:Am I missing something? I thought they wanted to obtain the size in bytes. That is something that can't be done with ArraySize() since it only returns the number of elements. Sure you could multiply with that value but there is no ArrayType() command. Not yet
Fluid Byte is correct. I'm interested in the size of the array in bytes.

Actually the ArraySize() command is misleading because, as was pointed out, it's not the size of the Array you are getting, but the number of elements.

IMHO it would have been better to name this command ArrayElements() (or something similar). This way ArraySize() would have been free to use as command to get the real size in bytes.

BTW: The same goes for ListSize...

bye
fsw

netmaestro · Post by **netmaestro** » Sat Jun 06, 2009 11:40 pm

With the current commands it's as simple as x*y now, imho adding a command such as TotalArrayBytes or such is analagous to sending your remote control out to get hydraulic-assisted buttons installed. Just my 2 cents, no offense meant to anyone.

PB · Post by PB » Sun Jun 07, 2009 1:52 am

> IMHO it would have been better to name this command ArrayElements()

This has all been debated before in another heated thread, and the result
was to keep it named as ArraySize(). No need to go over it again.

blueznl · Post by **blueznl** » Sun Jun 07, 2009 9:43 am

So, all that is needed is a feature requst called: ArrayByteSize