[Qt-interest] qdiriterator

[Soumen Banerjee]

Hi,
You can name the files in a sequence when you generate them. In that case,
it will be a lot simpler to find the newest file then. Just check the names
sequentially and check if they exist with QFileInfo::isFile() .
Another possibility is to use QDirIterator, and just set the first file to
the newest. Make a QFileInfo called newest, and keep updating newest is you
find a file which is newer (QDateTime objects have > operators). This way,
at the end of the loop, youll have newest pointing to the newest file in the
directory.
This is the same thing as a linear pass over an array to find the maximum.
Regards,
Soumen

On Fri, Apr 15, 2011 at 1:46 AM, caius ligarius <caius9090 at gmail.com> wrote:

> Thanks. Does this automatically sort by time or will I need to parse
> through the iterator and pick the last file?
>
> caius
>
>
> On Thu, Apr 14, 2011 at 12:30 PM, Rohan Prabhu <rohan at rohanprabhu.com>wrote:
>
>> Use:
>>
>> QDirIterator dirIter("/home/user/path/to/directory",
>> QStringList(QString("stats*.txt")), QDir::Files);
>>
>> or, if you intend to read those files as well, and hence would like to
>> iterator over files which are readable:
>>
>> QDirIterator dirIter("/home/user/path/to/directory",
>> QStringList(QString("stats*.txt")), QDir::Files|QDir::Readable);
>>
>> then simply iterator over the QDirIterator:
>>
>> while(dirIter.hasNext()) {
>>     QString filePath = dirIter.next();
>>     // Do something with filePath
>> }
>>
>> Hope it helps.
>>
>> Regards,
>> rohan
>>
>> On Fri, Apr 15, 2011 at 12:40 AM, caius ligarius <caius9090 at gmail.com>wrote:
>>
>>> I have the path to some parent folder say some QString targetDir.  I
>>> would like to pick up the latest file (time of creation) which begins with
>>> "stats*.txt". I think I need to use QDirIterator but I am not sure how I can
>>> use it for my specific use.
>>>
>>> Could somebody please help?
>>>
>>> Thanks,
>>> Caius
>>>
>>>
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>>
>
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