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• Static Variables

  - by anurag18294

  Can anyone explain me the working of static variables?

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• querries related to pointers in c [closed]

  - by akansha agarwal

  can we have constant pointers in c program explain with example can we have pointers to function what are far and near pointers

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• C++ Constructor Initializer List - using member functions of initialized members

  - by Andy

  I've run into the following a few times with initializer lists and I've never been able to explain it well. Can anyone explain why exactly the following fails (I don't have a compiler to catch typos, so bear with me): class Foo { public: Foo( int i ) : m_i( i ) {} //works with no problem int getInt() {return m_i;} ~Foo {} private: int m_i; }; class Bar { public: Bar() : m_foo( 5 ), //this is ok m_myInt( m_foo.getInt() ) //runtime error, seg 11 {} ~Bar() {} private: Foo m_foo; int m_myInt; }; When trying to call member functions of members initialized higher up the initializer list, I get seg faults. I seem to recall this is a known problem (or perhaps somehow by design) but I've never seen it well described. The attached example is contrived with plain old data types, but substitute the Bar::m_myInt with another object lacking a default (empty) constructor and the issue is more real. Can anyone enlighten me? Thanks!

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• [Assembly] dword ptr? What does that mean?

  - by kotarou3

  Could someone explain what this means? (Intel Syntax, x86, Windows) and dword ptr [ebp-4], 0

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• server.mappath("."), server.mappath("~"), server.mappath(@"\"), server.mappath("/"). What is the dif

  - by Manu

  Can anyone explain the difference between Server.MapPath("."), Server.MapPath("~"), Server.MapPath(@"\") and Server.MapPath("/")?

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• why we use infopath in sharepoint

  - by Dhanraj

  hi Can anyone explain why we use infopath in sharepoint? Regards Dhanraj.S

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• setTimeout doesn't work with window.location?

  - by Syom

  i try to rich flash like effect when changing window location, but there is a small problem, i can't solve. look at the script please $(document).ready(function(){ $('a.flash').click(function(e) { e.preventDefault(); $('body').fadeOut(1500); setTimeout("", 1500); window.location=this.href; }); }); window.location=this.href must be done after 1500ms, but it doesn't happen. could you explain why? what is strange, when i try to write alert("something"); instead of window.location=this.href, it works fine. Could you explain why? Thanks

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• occam-pi: extended rendezvous

  - by Tunji Gbadamosi

  I'd appreciate it if someone could explain the concept of extended rendezvous to me. Thanks.

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• ViewState in ASP.net

  - by user8965

  Hi All, Can anybody explain ViewState(in ASP.NET) as short as possible.

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• Meaning of wild pointer in C ?

  - by sagar

  Hi,can please explain me,the meaning of wild pointer in C, and how it obtain ?

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• Difference between Ajax and Dojo

  - by Riccardo The Loser

  Hi, can you explain to me the difference between Ajax and Dojo?

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• What's the difference between PATH_NOT_FOUND and NAME_NOT_FOUND

  - by Benjamin

  In Win32 layer, we often meet ERROR_PATH_NOT_FOUND, ERROR_NAME_NOT_FOUND. When does WinAPI(eg CreateFileW, RemoveDirectoryW) return these values? And What's the difference? If I write a file system driver, when do I set STATUS_OBJECT_PATH_NOT_FOUND or STATUS_OBJECT_NAME_NOT_FOUND? I'm so confused. Is there anyone who can explain clearly? Or are there any documents explain this? I couldn't find them. Thanks in advance.

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• use atmosphere api or use grizzly directly?

  - by cometta

  i cannot see the different between using atmosphere api or use grizzly directly? can explain?

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• how EJB Life cycle methods are invoked

  - by Kumar

  Can some one explain on how typical sessin bean's life cycle is and who hadle those?

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• How to parse an Excel file using PHP

  - by justjoe

  Can anybody point me to a reference or just explain about how to parse an Excel file in general?

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• subforms in Zend

  - by Rakes

  How subforms created in zend? Please explain with an example.

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• Null Value Statement

  - by Sam

  Hi All, I have created a table called table1 and it has 4 columns named Name,ID,Description and Date. I have created them like Name varchar(50) null, ID int null,Description varchar(50) null, Date datetime null I have inserted a record into the table1 having ID and Description values. So Now my table1 looks like this: Name ID Description Date Null 1 First Null One of them asked me to modify the table such a way that The columns Name and Date should have Null values instead of Text Null. I don't know what is the difference between those I mean can anyone explain me the difference between these select statements: SELECT * FROM TABLE1 WHERE NAME IS NULL SELECT * FROM TABLE1 WHERE NAME = 'NULL' SELECT * FROM TABLE1 WHERE NAME = ' ' Can anyone explain me?

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• What is the mean of A/B testing of a Website?

  - by metal-gear-solid

  Please explain with example What is the mean of A/B testing of a Website?

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• is using has_and_belongs_to_many for models is a bad idea?

  - by Vamsi

  Can some one please explain the the pros and cons between has_many :through and has_and_belongs_to_many?

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• Any way to avoid a filesort when order by is different to where clause?

  - by Julian

  I have an incredibly simple query (table type InnoDb) and EXPLAIN says that MySQL must do an extra pass to find out how to retrieve the rows in sorted order. SELECT * FROM `comments` WHERE (commentable_id = 1976) ORDER BY created_at desc LIMIT 0, 5 exact explain output: table select_type type extra possible_keys key key length ref rows comments simple ref using where; using filesort common_lookups common_lookups 5 const 89 commentable_id is indexed. Comments has nothing trick in it, just a content field. The manual suggests that if the order by is different to the where, there is no way filesort can be avoided. http://dev.mysql.com/doc/refman/5.0/en/order-by-optimization.html I also tried order by id as well as it's equivalent but makes no difference, even if I add id as an index (which I understand is not required as id is indexed implicitly in MySQL). thanks in advance for any ideas!

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• virtual function

  - by saha

  what are virtual functions? what is pure virtual function? please explain with example

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• Select rows in random order and then reverse it

  - by Faruz

  I need to select rows in random order and return a query which holds the rows in both regular order and in reverse order. This is done to simulate a fantasy draft for a basketball game I'm working on. For example, I need a result set as followed: team1 1 team2 2 team6 3 team9 4 team9 5 team6 6 team2 7 team1 8 As you can see, the first four teams are random then then following four are in reverse order. Hope I managed to explain the problem, if not - please comment and I'll explain further.

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• what is repository in doctrine?

  - by ajsie

  i wonder what a repository means in doctrine? could someone please explain?

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• How Do I Fix Merge Conflicts in Git?

  - by Spoike

  Do you know a good way to explain how to resolve merge conflicts in git?

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• Need Information on XslCompiledTransform in Plain English

  - by M Murphy

  Does anybody have any links that explain proper implementation of the XSLCompiledTransform? Thanks

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