How do I initilize a "vector <wstring> vtws" variable?

Posted on 2007-12-04
Last Modified: 2012-08-13
Hi, I'm getting a "Uninitilize memory error" in a tool called Purify.  It's pointing to my varilable declared as below. How do I initilize such variable (a vector for storing wstring)?  Thank kyou.
vector <wstring> vtws
Question by:lapucca
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
  • 2
  • +1
LVL 86

Accepted Solution

jkr earned 250 total points
ID: 20407073
There is no real need to initialize a vector, since it is a container that is filled later. If you want to, you could use

vector <wstring> vtws;

LVL 86

Expert Comment

ID: 20407089
BTW, Is that the complete snippet? If so, Purify is wrong here.

Author Comment

ID: 20407256
I think that error went away.  Let me verify and get back to you.  Thank you.
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

LVL 40

Assisted Solution

evilrix earned 250 total points
ID: 20409820
Below is the correct way to initialize it; however, since vector's have a default constructor it isn't necessary and as such Purify is being less than clever about this (I have had nothing by poor experiences using Purify!).

std::vector<std::wstring> vtws = std::vector<std::wstring>();

Open in new window

LVL 39

Expert Comment

ID: 20410592
>>>> (I have had nothing by poor experiences using Purify!)
I didn't use Rational Purify myself, but all meanings I heard from were similar to the above.

>>>> vector <wstring> vtws;
Nevertheless, Purify may have detected some kind of data corruption, or show some wrong variables due to 'Precompiled Header' mix-up. If the error vanished without being reproducable, I would assume an error like that rather than a fundemental Purify problem.

Regards, Alex

Author Comment

ID: 20411455
Can't use the following in the declaration in the .h file.  Got 4 errors duing compilation.
std::vector<std::wstring> vtws = std::vector<std::wstring>();
LVL 40

Expert Comment

ID: 20411529
Well yes, that would make sense :) You shouldn't defining things in your header file, this is what .cpp files are for. .hpp files are for declarations.

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Often, when implementing a feature, you won't know how certain events should be handled at the point where they occur and you'd rather defer to the user of your function or class. For example, a XML parser will extract a tag from the source code, wh…
Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.
The viewer will learn additional member functions of the vector class. Specifically, the capacity and swap member functions will be introduced.

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question