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• Max value amongst 4 columns in a row.

  - by KandadaBoggu

  I have test_scores table with following fields: Table schema: id (number) score1 (number) score2 (number) score3 (number) score4 (number) Sample data: id score1 score2 score3 score4 1 10 05 30 50 2 05 15 10 00 3 25 10 05 15 Expected result set: id col_name col_value 1 score4 50 2 score2 15 3 score1 25 What is a good SQL for this?(I am using MySQL.)

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• Remove value from array?

  - by Rajesh45

  Hello friend, How can I take out one line of this array array< array< int^ >^ >^ sample = gcnew array< array< int^ >^ >{ gcnew array<int>{0, 0, 0, 0, 0}, gcnew array<int>{1, 1, 1, 1, 1}, gcnew array<int>{2, 2, 2, 2, 2}, }; So it would be :- array< array< int^ >^ >^ sample = gcnew array< array< int^ >^ >{ gcnew array<int>{0, 0, 0, 0, 0}, gcnew array<int>{2, 2, 2, 2, 2}, }; Rajesh.

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• A btter way to represent Same value given multiple values(C#3.0)

  - by Newbie

  I have a situation for which I am looking for a more elegant solution. Consider the below cases "BKP","bkp","book-to-price" (will represent) BOOK-TO-PRICE "aop","aspect oriented program" (will represent) ASPECT-ORIENTED-PROGRAM i.e. if the user enter BKP or bkp or book-to-price , the program should treat that as BOOK-TO-PRICE. The same holds good for the second example(ASPECT-ORIENTED-PROGRAM). I have the below solution: Solution: if (str == "BKP" || str == "bkp" || str == "book-to-price" ) return "BOOK-TO-PRICE". But I think that there can be many other better solutions . Could you people please give some suggestion.(with an example will be better) I am using C#3.0 and dotnet framework 3.5

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• Double multiplied by 100 and then cast to long is giving wrong value

  - by xyz

  I have the following code: Double i=17.31; long j=(long) (i*100); System.out.println(j); O/P : 1730 //Expected:1731 Double i=17.33; long j=(long) (i*100); System.out.println(j); O/P : 1732 //Expected:1733 Double i=17.32; long j=(long) (i*100); System.out.println(j); O/P : 1732 //Expected:1732{As expected} Double i=15.33; long j=(long) (i*100); System.out.println(j); O/P : 1533 //Expected:1533{as Expected} I have tried to Google but unable to find reason.I am sorry if the question is trivial.

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• get the length/width of value in a factor

  - by Brandon

  How do you get the length of a variable. I am trying to get the last character of factor but the width/length of the contents is variable. I was trying to do something like this: newvariable <- substr(oldvariable, length(oldvariable) -1, length(oldvariable))

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• Constructor return value

  - by Ivan Gromov

  Could you tell me what is wrong with my class constructor? Code: CVector::CVector (int size_) { if (size_ > 0) { this->size = size_; this->data = new double[size]; for (int i = 0; i < size; i++) { (*this)(i) = i; } } cout << "constructor end" << endl; return; } Usage example: tvector = CVector(6); I get an access violation after "constructor end" output.

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• Best way to search for a saturation value in a sorted list

  - by AB Kolan

  A question from Math Battle. This particular question was also asked to me in one of my job interviews. " A monkey has two coconuts. It is fooling around by throwing coconut down from the balconies of M-storey building. The monkey wants to know the lowest floor when coconut is broken. What is the minimal number of attempts needed to establish that fact? " Conditions: if a coconut is broken, you cannot reuse the same. You are left with only with the other coconut Possible approaches/strategies I can think of are Binary break ups & once you find the floor on which the coconut breaks use upcounting from the last found Binary break up lower index. Window/Slices of smaller sets of floors & use binary break up within the Window/Slice (but on the down side this would require a Slicing algorithm of it's own.) Wondering if there are any other way to do this.

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• Adding Value into an Input Field

  - by McCrum

  Hey, I am working on an iPhone Web App using HTML & CSS. I have currently got the JavaScript/HTML5 Geolocation picking up my current location and showing me it on a Google Map using Lat & Long values. I also want to add these Lat & Long Values into the 'address' text field on the page so I can submit the details. Here is the link: http://m.belfi.co.uk/form.html When I click 'find me' I would like the lat and long to be added to the 'address' input field. Have no idea how to do this though :(

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• wpf textbox tootip binding itself value

  - by jciwolf

  </Style> I want to bind the textbox text to the Textbox's property such as text or something. but you know what I think above dose't work. can you help me ,thank you very much

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• Updating value in Linq to SQL IEnumerable

  - by Learner

  Using Linq to SQL: if(!parentlist.childlist.Contains(row1)) parentlist.childlist.Add(row1); else How do I update the required childlist row with row1? Each row of the child list has a unique id. parentlist implements IEnumerable and childlist is IList.

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• Parsing number value from SEF url in PHP

  - by newbie

  I have SEF urls like /sitename/section/12-news-title and number 12 is id of the news. I need to get that number 12 in my php code, is there any out of the box method in PHP for this?

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• SSIS Null Value Questions

  - by Saobi

  I have a table with 5 string columns, all can be NULLs. After I read the data from this table, I want to convert any null values into empty strings. The reason is that I need to compare these columns with columns in another table of the same schema (using conditional split), and null values would cause the comparison to evaluate to NULL. Is there any functionality in SSIS that allows me to convert NULL's to empty strings, or just not having to deal with NULL's at all?

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• Question regarding to value/reference type of events

  - by Petr

  Hi, On the MSDN, I have found following: public event EventHandler<MyEventArgs> SampleEvent; public void DemoEvent(string val) { // Copy to a temporary variable to be thread-safe. EventHandler<MyEventArgs> temp = SampleEvent; if (temp != null) temp(this, new MyEventArgs(val)); } I do not understand, "copy to temporary variable", isnt it reference type?

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• Difference in techniques for setting a stubbed method's return value with Rhino Mocks

  - by CRice

  What is the main difference between these following two ways to give a method some fake implementation? I was using the second way fine in one test but in another test the behaviour can not be achieved unless I go with the first way. These are set up via: IMembershipService service = test.Stub<IMembershipService>(); so (the first), using (test.Record()) //test is MockRepository instance { service.GetUser("dummyName"); LastCall.Return(new LoginUser()); } vs (the second). service.Stub(r => r.GetUser("dummyName")).Return(new LoginUser()); Edit The problem is that the second technique returns null in the test, when I expect it to return a new LoginUser. The first technique behaves as expected by returning a new LoginUser. All other test code used in both cases is identical.

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• getting another website data to manipulate it's value in perl

  - by aun ali

  use CGI qw(:standard); use CGI::Carp qw(fatalsToBrowser warningsToBrowser); our @a=param(src="http://fxrates.forexpros.com/index.php?pairs_ids=1525=last_update"); print header(),start_html('results.pl'); $a=http://fxrates.forexpros.com/index.php?pairs_ids=1525=last_update; '<iframe frameborder="0" scrolling="no" height="95" width="213" allowtransparency="true" marginwidth="0" marginheight="0" src="http://fxrates.forexpros.com/index.php?pairs_ids=1525;&header-text-color=%23FFFFFF&curr-name-color=%230059b0&inner-text-color=%23000000&green-text-color=%232A8215&green-background=%23B7F4C2&red-text-color=%23DC0001&red-background=%23FFE2E2&inner-border-color=%23CBCBCB&border-color=%23cbcbcb&bg1=%23F6F6F6&bg2=%23ffffff&bid=hide&ask=hide&last=hide&high=hide&low=hide&change=hide&change_in_percents=hide&last_update=show"></iframe><br /><div style="width:213"><span style="float:left"><span style="font-size: 11px;color: #333333;text-decoration: none;">The <a href="http://www.forexpros.com/quotes" target="_blank" style="font-size: 11px;color: #06529D; font-weight: bold;" class="underline_link">Forex Quotes</a> are Powered by Forexpros - The Leading Financial Portal.</span></span></div>'; print '<br/>'; print "$a"; print end_html();' getting error: Can't modify constant item in scalar assignment at livedata.pl line 4, near ""http://fxrates.forexpros.com/index.php?pairs_ids=1525=last_update")" syntax error at livedata.pl line 6, near "http:" Execution of livedata.pl aborted due to compilation errors.

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• C++ strcpy(Struct.Property, "VALUE") Use in C#?

  - by gtas

  Hi all, i created a Wrapper for a C++ dll. While reading the documentation i reached to a point using this function strcpy(StructName.strPropGetter, "A STRING"); I'm not kinda C++ guy, i can't figure how to transfer this code in C#. My wrapper gave me this property without a setter. Any light would be nice. Thank you

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• Choosing a Reporting Services parameter value based on the currently logged in user

  - by Robert Iver

  Here's my situation. I have a Microsoft Reporting Services report that as a parameter takes a salesperson's name and shows them their sales across their territories blah blah blah. But, salesperson A should not be able to choose and view salesperson B's data. So, my thought was to get the currently logged in user from Reporting Services, and then use that to populate the "salesperson" parameter. Is there a way to get the currently logged in user through some hidden RS interface, or is there some other way of accomplishing my goal that I'm just not seeing? Any help would be GREAT, as the higher ups aren't too happen with my (apparent) lack of security right now.

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• Django: How/Where to store a value for a session without unnecessary DB hits

  - by GerardJP

  Hi all, I have an extended userprofile with AUTH_PROFILE_MODULE (ref: http://tinyurl.com/yhracqq) I would like to set a user.is_guru() method similar to user.is_active(). This would results for al views (or rather templates) to e.g. disable/enable certain user messages, displaying of widgets, etc. The boolean is stored in the extended user profile model, but I want to avoid hitting the DB for every view. So the questions is .. Do I use a context_processor, a template tag, session_dict or what have you to, possible cached, store this info for the duration of the users visit. Note: I dont have performance issues, so it's definitely filed under premature optimization. I just want to avoid generating extra work in the future :). Any pointers are very welcome. Thanx and greetz! Gerard.

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• Cookie value to define style on page load

  - by zac

  I am using the scripts from here http://www.quirksmode.org/js/cookies.html and have successfully created a cookie.. but am having trouble doing anything with it. I would like to have a style defined if a cookie is present. The function for the readCookie is function readCookie(name) { var nameEQ = name + "="; var ca = document.cookie.split(';'); for(var i=0;i < ca.length;i++) { var c = ca[i]; while (c.charAt(0)==' ') c = c.substring(1,c.length); if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length); } return null; } I am trying to use it on page load with something like this window.onload=function(){ var x = readCookie('myCookieValue'); if (x) { document.getElementById('div').innerHTML = "<style type=\"text/css\">.form {display:none}</style>"; } } What would be the correct way of writing this?

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• c# list<int> how to insert a new value in between two values

  - by gdubs

  so i have a list where i need to add new values constantly but when i do i need to increment it and insert it in between two values. List<int> initializers = new List <int>(); initializers.Add(1); initializers.Add(3); so initializers would have 1, 3 values. i would then process a new set of numbers. the initializers will need to have the values. 1, 5, 3, 7 and if i process another set of numbers it should become 1, 9, 5, 13, 3, 11, 7, 15 i know how to properly generate the new values inserted, i just need some help on inserting it in between the existing values of the initializers without having to add 2 or 3 more loops to move the values' positions.

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• MySQL: SELECT highest column value when WHERE finds similar entries

  - by Ike

  My question is comparable to this one, but not quite the same. I have a database with a huge amount of books, with different editions of some of the same book titles. I'm looking for an SQL statement giving me the highest edition number of each of the titles I'm selecting with a WHERE clause (to find specific book series). Here's what the table looks like: |id|title |edition|year| |--|-------------------------|-------|----| |01|Serie One Title One |1 |2007| |02|Serie One Title One |2 |2008| |03|Serie One Title One |3 |2009| |04|Serie One Title Two |1 |2001| |05|Serie One Title Three |1 |2008| |06|Serie One Title Three |2 |2009| |07|Serie One Title Three |3 |2010| |08|Serie One Title Three |4 |2011| |--|-------------------------|-------|----| The result I'm looking for is this: |id|title |edition|year| |--|-------------------------|-------|----| |03|Serie One Title One |3 |2009| |04|Serie One Title Two |1 |2001| |08|Serie One Title Three |4 |2011| |--|-------------------------|-------|----| The closest I got was using this statement: select id, title, max(edition), max(year) from books where title like "serie one%" group by name; but it returns the highest edition and year and includes the first id it finds: |--|-----------------------|-------|----| |01|Serie One Title One |3 |2009| |04|Serie One Title Two |1 |2001| |05|Serie One Title Three |4 |2011| |--|-----------------------|-------|----| This fancy join also comes close, but doesn't give the right result: select b.id, b.title, b.edition, b.year from books b inner join (select name, max(edition) as maxedition from books group by title) g on b.edition = g.maxedition where b.title like "serie one%" group by title; Using this I'm getting unique titles, but mostly old editions.

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• in table view my cell value is blank for second row in objective-c

  - by uttam

  i am calling the data from xml in table view. after the the first row of data in tableview, my second row is empty in tableview, and from third row data is available. but my last data for row is missing from tableview, because of the second row. how can i fill that second row.

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• class method as hash value

  - by demas

  I have this working code: class Server def handle(&block) @block = block end def do @block.call end end class Client def initialize @server = Server.new @server.handle { action } end def action puts "some" end def call_server @server.do end end client = Client.new client.call_server My Server will handle more then one action so I want to change code such way: class Server def handle(options) @block = options[:on_filter] end def do @block.call end end class Client def initialize @server = Server.new my_hash = { :on_filter => action } @server.handle(my_hash) end def action puts "some" end def call_server @server.do end end client = Client.new client.call_server It is incorrect code because action() method calls on create my_hash, but if I try to modify code to: my_hash = { :on_filter => { action } } i get error message. Is it possible to create hash with methods as hash values ?

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• I am not able to get the value of selected menuItem from f:setPropertyActionListener target attribut

  - by anandhinaveen

  In UI i have binded:

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• A member variable's hashCode() value is different

  - by Jacques René Mesrine

  There's a piece of code that looks like this. The problem is that during bootup, 2 initialization takes place. (1) Some method does a reflection on ForumRepository & performs a newInstance() purely to invoke #setCacheEngine. (2) Another method following that invokes #start(). I am noticing that the hashCode of the #cache member variable is different sometimes in some weird scenarios. Since only 1 piece of code invokes #setCacheEngine, how can the hashCode change during runtime (I am assuming that a different instance will have a different hashCode). Is there a bug here somewhere ? public class ForumRepository implements Cacheable { private static CacheEngine cache; private static ForumRepository instance; public void setCacheEngine(CacheEngine engine) { cache = engine; } public synchronized static void start() { instance = new ForumRepository(); } public synchronized static void addForum( ... ) { cache.add( .. ); System.out.println( cache.hashCode() ); // snipped } public synchronized static void getForum( ... ) { ... cache.get( .. ); System.out.println( cache.hashCode() ); // snipped } }

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