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Prefill Array
Posted: Mon Nov 08, 2010 2:37 pm
by jamirokwai
Hiya,
my suggestion is to add a prefill-mechanism for arrays, like this:
Dim Test.s(2) = ("AA","BB","CC)
Instead of having to use:
Dim Test.s(2)
Test(0) = "AA"
Test(1) = "BB"
Test(1) = "CC"
(EDIT: added "having to use" to clarify
Re: Prefill Array
Posted: Mon Nov 08, 2010 3:16 pm
by STARGÅTE
Dim Test.s(2) = ("AA","BB","CC")
No Basic Syntax!
Use:
Dim Test.s(2) : Test(0) = "AA" : Test(1) = "BB" : Test(2) = "CC"
Re: Prefill Array
Posted: Mon Nov 08, 2010 3:20 pm
by jamirokwai
Hi STARGÅTE,
please reread my post...
Re: Prefill Array
Posted: Mon Nov 08, 2010 4:05 pm
by skywalk
I agree this is not Basic syntax.
But we do have Read - Data - Restore and/or Macros to simplify the function.
Re: Prefill Array
Posted: Mon Nov 08, 2010 4:17 pm
by jamirokwai
Hi,
so it's not basic syntax, agreed
Stargate, I misinterpreted your comment.
Nontheless, having a prefilled Array without Read/DataSection would make some things easier.
Re: Prefill Array
Posted: Mon Nov 08, 2010 6:07 pm
by Little John
STARGÅTE wrote:Dim Test.s(2) = ("AA","BB","CC")
No Basic Syntax!
Omiting "Then" after "If" is no classic BASIC syntax, too.
And there is no official standard, that tells us what is BASIC syntax and what isn't.
STARGÅTE wrote:Use:
Dim Test.s(2) : Test(0) = "AA" : Test(1) = "BB" : Test(2) = "CC"
The main difference is, that jamirokwai's proposal is much better readable.
It also requires less typing.
Regards, Little John
PS: One of the next versions of my pre-processor
LPP will allow to use this syntax.
I have planned this some time ago, but am just busy with other projects ATM.
Re: Prefill Array
Posted: Mon Nov 08, 2010 7:54 pm
by skywalk
Don't get me wrong, I welcome the "Basic" enhancements in PureBasic, but what do you do for multi-dimensional arrays?
Code: Select all
Dim Test.s(1,2) = ("AA","BB","CC":"DD","EE","FF")
This can get less readable in a hurry.
Re: Prefill Array
Posted: Mon Nov 08, 2010 8:49 pm
by Little John
My pre-processor probably will only support one-dimensional arrays.
Generally speaking, the programming language
Euphoria (now free and open source) shows how this can be handled (IMHO) elegantly with arbitrary dimensions. Your example could look e.g. like this:
Code: Select all
Dim Test.s(1,2) = {{"AA","BB","CC"},{"DD","EE","FF"}}
or, if line continuation is possible,
Code: Select all
Dim Test.s(1,2) = { _
{"AA","BB","CC"}, _
{"DD","EE","FF"} _
}
Regards, Little John
Re: Prefill Array
Posted: Mon Nov 08, 2010 11:26 pm
by jamirokwai
Little John wrote:My pre-processor probably will only support one-dimensional arrays.
Generally speaking, the programming language
Euphoria (now free and open source) shows how this can be handled (IMHO) elegantly with arbitrary dimensions. Your example could look e.g. like this:
Code: Select all
Dim Test.s(1,2) = {{"AA","BB","CC"},{"DD","EE","FF"}}
or, if line continuation is possible,
Code: Select all
Dim Test.s(1,2) = { _
{"AA","BB","CC"}, _
{"DD","EE","FF"} _
}
Regards, Little John
Now, that is a great idea, I think!
Fits perfectly for hard-coded data!
Re: Prefill Array
Posted: Mon Nov 08, 2010 11:41 pm
by STARGÅTE
And for LinkedLists:
Code: Select all
NewList Test.s() = {"AA","BB","CC"}
And for Maps:
Code: Select all
NewMap Test.s() = {"Key1":"AA","Key2":"BB","Key3":"CC"}
And for Structures:
Code: Select all
Structure Test
Long.l
String.s
Array Field.b(3)
EndStructure
Test.Test = {123,"Text",{1,2,3,4}}
very useful
,
not really, is much harder to read later
Re: Prefill Array
Posted: Tue Nov 09, 2010 7:42 am
by KJ67
Personally I would much rather see a update in the DataSection.
Code: Select all
Structure XYZ
A.i
B.f
C.s
EndStructure
CopyMemory(?MyData, @SomeWhere, MySize)
DataSection
MyData:
Data.XYZ 10, 3.1415, "The Brown fox...."
Data.XYZ 12, 0.0010, ""
EndDataSection
This would better fit my needs, still keep a similar structure and at the same time give a fast and simple way to fill complicated structures.
Re: Prefill Array
Posted: Tue Nov 09, 2010 9:01 am
by STARGÅTE
@KJ67:
+1
Re: Prefill Array
Posted: Tue Nov 09, 2010 12:25 pm
by TomS
STARGÅTE wrote:
And for LinkedLists:
Code: Select all
NewList Test.s() = {"AA","BB","CC"}
And for Maps:
Code: Select all
NewMap Test.s() = {"Key1":"AA","Key2":"BB","Key3":"CC"}
And for Structures:
Code: Select all
Structure Test
Long.l
String.s
Array Field.b(3)
EndStructure
Test.Test = {123,"Text",{1,2,3,4}}
PB does not support Multiline statements. That's why it's hard to read.
But
With could be enhanced to work like enumeration with LLs and Maps:
Code: Select all
NewList Test.s()
With Test()
"AA"
"BB"
EndWith
NewMap Test.s()
With Test()
(Key1, "A")
(Key2, "B")
EndWith
NewList Test.POINT()
With Test()
(10, 4)
(35, 95)
(45, 74)
EndWith