Am 05.10.2017 05:04 schrieb "Ryan Joseph" :
> I’ve been wanting to learn how to contribute to the compiler for years
now but maybe this is an easy enough project to start with. I don’t know if
this is a problem people have though but I assume it may be since
Yesterday when I was thinking about that enumerators I had an idea for a
language feature and something which I saw introduced in Objective-C some years
ago.
Retaining of a member variable through a property is a common pattern I do
everyday nearly. In my root class I manage a simply retain
I'm trying to use findfirst()/findnext to obtain a list of files. Here's my
code:
Searchfile:=Tap_Drive+Tap_Path+'\'+Tap_SubDirectory+'\*.TAP';
If FindFirst(Searchfile, FAAnyfile-FAHidden, FileDirInfo)=0 then
..
It finds most files, even ones with really long file names, however it can't
find
> On Oct 4, 2017, at 10:03 PM, Michael Van Canneyt
> wrote:
>
> Newinstance allocates the memory for a new instance of the class.
> By default this is GetMem(instanceSize).
So you override the class method Newinstance in the enumerator class and return
the same block
> On Oct 4, 2017, at 5:19 PM, Marco van de Voort wrote:
>
> Yup, or a record. See e.g. http://www.stack.nl/~marcov/lightcontainers.zip
This seems like the simplest more efficient method. Does FPC just know it’s a
record internally and not try to dealloc it? GetEnumerator
On Wed, 4 Oct 2017 15:41:27 +0700
Ryan Joseph wrote:
> As I understand the for..in loop GetEnumerator method is expected to create a
> new object each time it’s called and FPC destroys it later when the loos is
> finished. Can I retain the enumerator and just reset
In our previous episode, Tony Whyman said:
> Unicode Character String handling is a question that keeps coming up on
> the Free Pascal Mailing lists and, empirically, it is hard to avoid the
> conclusion that there is something wrong with the way these character
> string types are handled.
On Wed, 4 Oct 2017, Ryan Joseph wrote:
On Oct 4, 2017, at 4:26 PM, Michael Van Canneyt wrote:
You can do so by overriding the newinstance and it's sister method of
your enumerator class.
Can you explain how this works or give an example? Not sure how these gets
> On Oct 4, 2017, at 4:26 PM, Michael Van Canneyt
> wrote:
>
> You can do so by overriding the newinstance and it's sister method of
> your enumerator class.
Can you explain how this works or give an example? Not sure how these gets
around the problem of alloc/dealloc
On Wed, 4 Oct 2017 13:10:02 +0100
Tony Whyman wrote:
> Unicode Character String handling is a question that keeps coming up on
> the Free Pascal Mailing lists and, empirically, it is hard to avoid the
> conclusion that there is something wrong with the way these
Unicode Character String handling is a question that keeps coming up on
the Free Pascal Mailing lists and, empirically, it is hard to avoid the
conclusion that there is something wrong with the way these character
string types are handled. Otherwise, why does this issue keep arising?
On 2017-10-04 09:41, Ryan Joseph wrote:
I’d like to remove all these alloc/deallocs so I can use for..in more
efficiently in tight loops.
I've had the same requirement, and also needed that functionality before
the for..in syntax existed in FPC. Take a look at my Iterator interface
and
In our previous episode, Michael Van Canneyt said:
> As an alternative you can create an object enumeator.
> It's simply allocated on the stack, and you can reset it in the enumerator
> operator.
Yup, or a record. See e.g. http://www.stack.nl/~marcov/lightcontainers.zip
On Wed, 4 Oct 2017, Ryan Joseph wrote:
As I understand the for..in loop GetEnumerator method is expected to create a new object each time it’s called
and FPC destroys it later when the loos is finished. Can I retain the enumerator and just reset it in-between calls?
I’d like to remove all
As I understand the for..in loop GetEnumerator method is expected to create a
new object each time it’s called and FPC destroys it later when the loos is
finished. Can I retain the enumerator and just reset it in-between calls? I’d
like to remove all these alloc/deallocs so I can use for..in
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