[Qt-interest] QString::size()

[Atlant Schmidt]

Nandita:

> ...however was perplexed about the sentence.

  So because QStrings aren't CStrings but are instead counted UTF16
  characters, the '\0' character has no special meaning within them.
  As a result, it can be embedded anywhere within the string just
  like any other UTF16 character.

                                                        Atlant

From: nandita-a.mehta at nokia.com [mailto:nandita-a.mehta at nokia.com]
Sent: Friday, September 02, 2011 07:30
To: Atlant Schmidt
Cc: qt-interest at qt.nokia.com
Subject: RE: QString::size()

Atlant:


Wanted to clarify the statement "A QString can embed '\0' characters (QChar::Null<http://doc.qt.nokia.com/latest/qchar.html#SpecialCharacter-enum>). The size<http://doc.qt.nokia.com/latest/qstring.html#size>() function always returns the size of the whole string, including embedded '\0' characters."
in the document.
Even I understood that QString does not require '\0' however was perplexed about the sentence.

Nandita

From: ext Atlant Schmidt [mailto:aschmidt at dekaresearch.com]
Sent: Friday, September 02, 2011 4:56 PM
To: Mehta Nandita-A (Nokia-SD/Bangalore); qt-interest at qt.nokia.com
Subject: RE: QString::size()

Nandita:


> And I was expecting the output as 6 (including '\0') but it is 5.
> QString str14 = "Apple";
> qDebug()<<str14.size();  //5

  What '\0' character? ;-)

  QStrings aren't CStrings; they're counted collections of UTF16 characters
  and don't require any trailing '\0' character to end them. So that string
  only contains 5 UTF16 characters.

                                             Atlant


From: qt-interest-bounces+aschmidt=dekaresearch.com at qt.nokia.com [mailto:qt-interest-bounces+aschmidt=dekaresearch.com at qt.nokia.com] On Behalf Of nandita-a.mehta at nokia.com
Sent: Friday, September 02, 2011 04:15
To: qt-interest at qt.nokia.com
Subject: [Qt-interest] QString::size()

Hi,

In the documentation (http://doc.qt.nokia.com/latest/qstring.html) it is mentioned that

"A QString can embed '\0' characters (QChar::Null<http://doc.qt.nokia.com/latest/qchar.html#SpecialCharacter-enum>). The size<http://doc.qt.nokia.com/latest/qstring.html#size>() function always returns the size of the whole string, including embedded '\0' characters."

And I was expecting the output as 6 (including '\0') but it is 5.
QString str14 = "Apple";
qDebug()<<str14.size();  //5


Any clarification on what does the above sentence in the documentation?

And I thought that is the difference between QString::size() and QString::length(). But not
qDebug()<<str14.length(); //5

Thank You.

Regards,
Nandita



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