fb vector equivalent?

Merick · Post by **Merick** » Dec 31, 2007 23:01

In some c++ source files, I've seen this include statement:

#include <vector>

Is there and FB equivalent for this?

anonymous1337 · Post by **anonymous1337** » Jan 01, 2008 0:25

No, but the FreeBASIC Extended Library enjoys implementing things like this. Vectors are really cool, but they're use templates, which FB doesn't have. You can fake this kinda thing with some Macro Hackage - Vectors are indeed beautiful.

Merick · Post by **Merick** » Jan 01, 2008 0:34

What exactly are these vectors?

anonymous1337 · Post by **anonymous1337** » Jan 01, 2008 1:10

They're a really cool type of arrays, basically :D

http://en.wikipedia.org/wiki/Vector_%28STL%29

sir_mud · Post by **sir_mud** » Jan 01, 2008 1:29

We have an Array implementation that is very similiar to c++ vectors in ext. It works with all built-in numerical types (maybe strings too, haven't checked) and it should easily work with a UDT also. Check the thread in Projects or see: http://fb-extended-lib.googlecode.com for more details.

Merick · Post by **Merick** » Jan 01, 2008 14:30

Would that work for the vector stuff in this:

http://www.mediafire.com/?ddmmdgx27vd

sir_mud · Post by **sir_mud** » Jan 01, 2008 14:50

We use more BASIC friendly terminology so a STL::Vector is ext.Array, we do have a set of Math vectors ext.math.vector2/3/4d and also an OpenGL compatible matrix class. Here: http://fb-extended-lib.googlecode.com/s ... rotate.bas is one of the examples Dr_D wrote to demonstrate using them.

Merick · Post by **Merick** » Jan 01, 2008 18:01

I'll take a look at that and hopefully it will help me out.

*edit*

I've looked through the document page and the thread, but I can't find any explanation of how to use ext.Array

sir_mud · Post by **sir_mud** » Jan 02, 2008 0:34

yea, sorry, the online docs are a bit old, i'm updating them now, the downloadable docs are the newest.

*edit*
Newest documentation is now online, you want Containers/Array.bi

Merick · Post by **Merick** » Jan 02, 2008 2:18

Could you post an example? The page for array.bi lists all the functions for it, but I just can't figure out how you're supposed to create the array in the first place.

porfirio · Post by **porfirio** » Jan 05, 2008 21:04

In Java we have List
And all it subclasses like ArrayList
And others....

That would be a good addiction to FreeBasic

anonymous1337 · Post by **anonymous1337** » Jan 05, 2008 21:28

Java also has Vector :P

Mindless · Post by **Mindless** » Jan 05, 2008 21:40

here's as close as I've come to figuring out how these work

Code: Select all

#include once "ext/containers/array.bi"

var foo = FBEXT_ARRAY(integer)()

foo.PushBack(&hdeadbeef)
foo.PushBack(&hcafebabe)

? hex(*foo.Front())
? hex(*foo.Back())

Merick · Post by **Merick** » Jan 05, 2008 22:51

for standard internal types that works, but not for udt's:

Code: Select all

#include once "ext/containers/array.bi"

type test
	a as integer
	b as string
end type

var t =  FBEXT_ARRAY(test)()

Code: Select all

FbTemp.bas(8) error 8: Undefined symbol, Arraytest in 'var t =  FBEXT_ARRAY(test)()'
FbTemp.bas(8) warning 12(0): Implicit variable allocation, Arraytest