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• F# how to return have value a tuple or null

  - by mamu

  let retVal = if reader.Read() then (reader.GetString(0), getBytesData reader 1, reader.GetDateTime(2)) else null F# don't allow null to returned How can i have value return as a tuple or a null?

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• Jquery return value

  - by Anton

  I used a code: jQuery.fn.MyFunction = function(){ return this.each(function() { attributes = "test"; return attributes; });} But when I call var1 = $(this).MyFunction();alert(var1); I got an [object], but not the "test". How to allow jquery plugin return a some value?

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• JavaScript: create a string or char from an ASCII value

  - by Sakthivel

  In JavaScript, how can you get a string representation of an ASCII value. e.g. how to turn 65 into "A"?

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• In String.replace("\c","") what ASCII value is ""?

  - by Tom

  Hi, im just writing my own replace method for any weird characters and i used the ASCI value 0, null to replace unwanted characters, i was hoping for them to be 'deleted', but this doesnt work. A gap just appears in the string. What exactly does String.Replace() do when removing a character for ""? Does it shift them all down and then 'delete' the final character or something?

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• Getting single value from a single row with Mysql/PHP

  - by Ghostrider

  Often I just need to get a single value from MySQL that I know exists there. I use the following construct: $result = end(mysql_fetch_array(mysql_query('SELECT FOUND_ROWS()', $db))); Is there a proper single function in PHP that would do this?

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• NULL value in :conditions =>

  - by Horace Ho

  Contract.all(:conditions => ['voided == ?', 0]).size => 364 Contract.all(:conditions => ['voided != ?', 0]).size => 8 Contract.all.size => 441 the 3 numbers does not added up (364 + 8 != 441). What's the proper way write the :conditions to count the rows which the voided column value is NULL or equal to zero?

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• read the dictionary value from array

  - by ben martin

  CALORIES = \ { 'Beef' : 200, \ 'Chicken' : 140, \ } class Food(): __slots__ = ( 'cal' # Calories ) def mkFood( name ): """Create and return a newly initialized Food item""" result = Food() result.cal = calorie in dict(CALORIES[1]) return result Is that a proper way to the value of the target item in Calories? Like getting 200, 140, such like that. result.cal = calorie in dict(CALORIES[1])

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• Converting Numpy Lstsq residual value to R^2

  - by whatnick

  I am performing a least squares regression as below (univariate). I would like to express the significance of the result in terms of R^2. Numpy returns a value of unscaled residual, what would be a sensible way of normalizing this. field_clean,back_clean = rid_zeros(backscatter,field_data) num_vals = len(field_clean) x = field_clean[:,row:row+1] y = 10*log10(back_clean) A = hstack([x, ones((num_vals,1))]) soln = lstsq(A, y ) m, c = soln [0] residues = soln [1] print residues

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• HOW TO RETURN VALUE FROM FUNCTION? (c#)

  - by Ole Jak

  So... I want to return value when C# function is called. I need a code example (simple summ of a,b values will be ok) Please help I need something like this ( I know ActionScript so I will write in it): public function sum(valueA:int, valueB:int):int { var summ:int = valueA + valueB; return summ; } How to translate it into C#?

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• JavaScript function to validate an integer value

  - by Psyche

  Hello, I'm building a shopping cart and I would like to use a JavaScript function to validate user input when entering the quantity value in the quantity text input. I would like to allow the entering of integer values only (no floats, no other characters). I know that I can apply this function using onKeyUp event and also I found isNaN() function, but it returns true even for floats (which is not ok). Can you guys help me out with this one? Thanks.

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• mass replace of values in more tables by a highest value

  - by nescius

  Hello, I have a table with OWN_ID and OWN_Email - 3ace7cf80edd | [email protected] 3acf6af33ff7 | [email protected] 3acda2524e00 | [email protected] 3ad75583c9a7 | [email protected] 3ad74b018999 | [email protected] etc. the problem is that it should contain only a single ID per Email, also I need to replace all OWN_ID values in another table by highest OWN_ID value of the OWN_Email

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• setting value to a parameter - always saying that it is null REALLY NEED INPUT

  - by Amina

  So I have this schedule visit page with two groups. Group 1 contains a list of: Cases. Group 2 contains a list of: Parties. each group has a checkboxes next to its item for the user to select. My Issue when i select a case and/or a party and save -- then go to the edit page of the visit i just saved and only my selected case is checked and the party i selected is not checked. After debugging i realized that the partyId is not being saved properly during the create page and thus not showing as selected or saved on the edit page. I really need help on how to properly save the party selected and setting for it a value from the parameter. Here is my code of what i have for saving a case and would like to know how to properly save with party. Controller [HttpPost] [ValidateInput(false)] public ActionResult Create(VisitViewModel viewModel, Guid[] associatedCasesSelected, Guid[] selectedParties) { if (!ModelState.IsValid) { viewModel.Time = _timeEntryHelper.Value; AddLookupsToViewModel(viewModel); return View(viewModel); } var visitEntry = Mapper.Map<VisitViewModel, VisitEntry>(viewModel); ... viewModel.CasePartyIds = selectedParties; try { _visitEntryService.Create(visitEntry, associatedCasesSelected); this.FlashInfo(string.Format(Message.ConfirmationMessageCreate, Resources.Entities.Visit.EntityName)); } catch (RulesException ex) { ex.CopyTo(ModelState); } if (ModelState.IsValid) return RedirectToAction("Edit", "Case", new { caseId = viewModel.CaseId }); AddLookupsToViewModel(viewModel); return View(viewModel); } VisitEntryService public void Create(VisitEntry visitEntry,IList<Guid>caseIds) { EnsureValid(visitEntry); _visitEntryRepository.Save(visitEntry); caseIds = AddCurrentCaseToCases(visitEntry.CaseId, caseIds); foreach (var caseId in caseIds.Distinct()) { var visit = new Visit {CaseId = caseId, VisitEntryId = visitEntry.VisitEntryId}; _visitService.Create(visit); } } AddCurrentCaseToCases private static IList<Guid>AddCurrentCaseToCases(Guid caseId, IEnumerable<Guid>caseIds) { var cases = new List<Guid>(); if (caseIds != null) { cases.AddRange(caseIds); if(!caseIds.Contains(caseId)) cases.Add(caseId); } else cases.Add(caseId); return cases; } VisitService public Visit Get(Guid visitId) { return DataContext.Visits.SingleOrDefault(v => v.VisitId == visitId); } public void Save(Visit visit) { if(visit.VisitId == Guid.Empty) { visit.VisitId = Guid.NewGuid(); DataContext.Visits.InsertOnSubmit(visit); } else { var currentVisit = Get(visit.VisitId); if (currentVisit == null) throw RepositoryExceptionFactory.Create("Visit", "VisitId"); } DataContext.SubmitChanges(); } Any TIPS or IDEAS is greatly appreciated at this time :) The entitiy for the parties will be VisitEntryParty

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• 'Subquery returned more than 1 value' problem in EntityFramework

  - by plotnick

  I have one 'Transaction' entity object with 'Operations' navproperty with multiplicity of 'Many'. When I'm adding only one operation per transaction nothing happens, but when I'm trying to add more than one operation, db.SaveChanges() throws an exception like 'Subquery returned more than 1 value blah, blah, blah' How can I solve that? Help me guys please... BTW... Could you tell me how can I see the exact query string that EF passes to Sql Server on db.SaveChanges() method?

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• for_each but for setting each element to a value in C++

  - by Goose Bumper

  I have the following code to assign a value to all the elements of a vector: x = 100; for (int i=0;i<vect.size();i++) { vect[i] = x; } It's straightforward enough, but I'm wondering if there is a function in the STL that does the same thing; something like for_each, but for assignment.

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• How to get the textbox value in php?

  - by Nitz

  On my page. i have one textbox and one button. -- on the button click event. -- one function will be called. Now, How to get that value of textbox and store in php variable? this should be done in that function which we will call on button click.

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• How to loop a key/value object in javascript

  - by Blankman

  var user = {}; now I want to create a setUsers method that takes a key/value pair object and initializes the user variable. setUsers = function(data) { // loop and init user } where data is like: 234: "john", 23421: "smith", ....

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• Best way to add the minus "-" front of decimal value

  - by AlwaysBeCoding

  I would like to ask how i should add the minus sign front of a decimal value. i want the user to add e.g. 100 and behind the scenes to convert it in -100 thank you.

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• Appropriate data field type for true/false value?

  - by Industrial

  Hi everybody, What's the most appropriate (read least data consuming) data field to store a true/false/1/0 value in a mySQL database? I have previously used a one character long tinyint, but I am not sure if it's the best solution? Thanks!

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• jquery change not working incase of dynamic value change

  - by Binay

  In jQuery how can I track onchange event if the value of textbox is changing dynamically from some other event. I tried this but its not working: $("#txtbox").change(function(){ alert("change"); });

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• How to retrieve query string value from URL value stored in a variable?

  - by user187580

  Hello, $url = 'http://www.domain.com/file.php?dir=r&hl=100,200&ord=3&key=a+b+c'; If it were a url I could get value of hl by, say, $_GET['hl']. but how do I retrieve the same from $url string. Thanks.

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• <? echo $_Session['value'] ?> not working in Chrome

  - by matt

  I have the following: <input type="hidden" name="phone_home" value="<? echo $_SESSION['full_home_phone'] ?>"> this works for firefox but not for google chrome.. can anyone help? thx ahead of time

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• Convert date/time string value to .NET DateTime

  - by stighy

  Hi guys, i've this string example value: Sun, 09 May 2010 11:16:35 +0200 I've to insert it into MySql Date/Time field. How can i convert it into .NET format (or Mysql format), so i can make my INSERT INTO mydate='2010-05-09 11:16:35' ? Thank you !

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• Use textbox value on submit as a query string variable

  - by Eric

  How would I take a text box value and use it in the query string on submit? I'd like it to start as this, /News?favorites=True and end up something like this after the user enters in a search and clicks search. /News?query=test&favorites=True The controller action looks like this public ActionResult Index(string query,bool favorites) { //search code } This question is something close to what I'd like to do, but I'd like to use the query string and maintain the existing values in the query string. Thanks.

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• Getting rows which include a value with MySQL

  - by sundowatch

  I have a MySQL query which gets including some vars like that: messages TABLE receiver cols user1 rows : 1,3,5 user2 rows : 2,3 user3 rows : 1,4 I want to get rows which includes '3' value. So I will get 'user1' and 'user2'. I tried that but naturally it doesn't work. mysql_query("SELECT * FROM messages WHERE receiver='3'"); How can I do this?

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• Textbox value changed

  - by developer

  Hi All, Is it possible to know if any of the textbox values have changed in the application. I have around 30 textboxes and I want to run a part of code only if, any of the textboxes value has changed out of the 30. Is there a way I can know that.

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