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• how to bind association in RoR

  - by ashok

  I have two tables, AppTemplate and AppTemplateMeta AppTemplate table has column id, MetaID, name etc. I have associated these two model like this class AppTemplate < ActiveRecord::Base set_table_name 'AppTemplate' belongs_to :app_template_meta, :class_name => "AppTemplateMeta", :foreign_key => 'MetaID' end If we fetch data using AppTemplate.all, I want associated meta details also. But currently it's not returning associated meta details. It just returns AppTemplate details. any guys can help me for this

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• Perform selector on paren NSOperation

  - by user326943

  I extend NSOperation (call it A) which contains NSOperationQueue for other NSOperations (which is another extended class different from A, call these operations B). When operation A is running (executing B operations) how do i call a specific function/method on operation A when certain event takes place on B operations? For example every operation B that finishes it calls a function on operation A returning itself? *Nested NSOperation and NSOperationQueue(s) Thanks

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• Class definition thinks setting a variable is a Unit?

  - by DeLongey

  Writing out a Scala class and problem here is that the compiler thinks that the code is a unit not returning the proper value. It's a method used to set a property in the class: def setObject(`object`:StripeObject):StripeObject = { this.`object` = `object` } The error is: type mismatch; found : Unit required: com.stripe.StripeObject The full class is: case class EventData(var previousAttributes: HashMap[String,Object], var `object`:StripeObject) extends StripeObject { def getPreviousAttributes = { previousAttributes } def setPreviousAttributes(previousAttributes: HashMap[String, Object]) = { this.previousAttributes = previousAttributes } def getObject = { `object` } def setObject(`object`:StripeObject):StripeObject = { this.`object` = `object` } } How do I make sure it doesn't return a Unit?

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• Retrieve all user from domain

  - by user268515

  Hi my idea is to retrieve all users from google app domain using java. I retrieved all the user using Provisioning api but when i tried to store the data in the table using JPA its returning time out Error.... I dont know how to store the entire details at a stretch. Please Help me... Regards, sharun.

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• C Macro for minimum of two numbers

  - by VaioIsBorn

  I want to make a simple macro with #define for returning the smaller of two numbers. How can i do this in C ? Suggest some ideas, and see if you can make it more obfuscated too.

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• Forward horizontal swipe events on UITableView to parent view

  - by D-Nice

  I have a UITableView that I want to have respond to taps and vertical swipes, but still have something like userInteractionEnabled = NO for horizontal swipes. By that I mean, it would not handle touches and pass the touch event back to its superview. Things I've tried that didn't work: returning NO in - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath Overriding touchesBegan/touchesMoved/touchesEnded and passing the event to the next responder Adding gesture recognizers for horizontal swipes and setting cancelsTouchesInView to YES I've been trying to fix this on and off for several weeks, so any help is greatly appreciated!

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• special characters to html entity using php

  - by text

  I want to convert special characters like ñ, Ñ to htmlentities using php. I tried using htmlentities, but instead of returning "&ntilde" for its value it returns "ñ" as its value.

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• How to "trigger" a click event on a specific anchor element with Javascript? preferably with jQuery

  - by Alex

  Hello there, What I want to do is issue a click event, preferably with jQuery, on an anchor element, causing the browser to follow that link. I know that my anchor selectors are correct, as they are returning 1 from .length. Here's what I've tried: $('#awesomeLink').click(); But it won't follow the link. How am I doing it wrong? Thanks!!

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• preventing a specific view from auto rotating... is that possible?

  - by Mike

  I have a view based app. Its self.view has several subviews and shouldAutorotateToInterfaceOrientation is returning YES. When I rotate the device, all views rotate as expected. Is that possible to prevent a subview from auto rotating even if the view's parent is auto rotating?

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• Can Prototype or JQuery return an HTTP status code on an AJAX request

  - by jotto

  url = "http://example.com" new Ajax.Request(url, { onComplete: function(transport) { alert(transport.status); } }); I'd like that to return a status of 200 if the site is working, or 500 if it is not working, etc.. But that code is returning 0 all the time. Ultimately, I want to have a setinterval function that regularly pings a website for uptime status.

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• How to return an [out] variant with VT = VT_RECORD without creating memory leak in ole32.dll?

  - by picarodevosio

  Hi, Purify is pointing memory leak in ole32.dll while returning a Variant with VT set to VT_RECORD as OUT parameter. I am using User Marshalling by generating proxy/stub dll from IDL. Can you suggest how to avoid this memory leak? Thanks Picaro De Vosio

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• how to get powershell to look for files in other folders when moving items?

  - by steeluser

  I have written this script to move files to the destination folder. Looks like I am missing something here because when I run the script, it is only looking for .zqx files in current directory and not all the drives. Please note that the ( dir $paths..) part is returning the list of .zqx files promptly. Paths.txt has drive letters like this C:\ D:\ E:\ $paths = get-content paths.txt mv (dir $paths -r -fi *.zqx | ?{$_.lastwritetime -lt ($sevendaysold)}) -dest e:\xqz Thanks Steeluser

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• MySQL select one field from table WHERE condition is in multiple rows

  - by Alex

  Tried to find the answer, but still couldn't.. The table is as follows: id, keyword, value 1 display 15.6 1 harddrive 320 1 ram 3 So what i need is something like this.. Select an id from this table where (keyword="display" and value="15.6") AND (keyword="harddrive" and value="320") There's also a possibility that there will be 3 or 4 such keyword conditions which should result into returning one id (one row) It seems there's something to deal with UNION but i didn't use it before so i can't figure it out Thanks in advance

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• Letter Count on a string

  - by user74283

  Python newb here. I m trying to count the number of letter "a"s in a given string. Code is below. It keeps returning 1 instead 3 in string "banana". Any input appreciated. def count_letters(word, char): count = 0 while count <= len(word): for char in word: if char == word[count]: count += 1 return count print count_letters('banana','a')

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• Getting a date value in a postgres table column and check if it's bigger than todays date

  - by Roland

  I have a Postgres table called clients. The name column contains certain values eg. test23233 [987665432,2014-02-18] At the end of the value is a date, I need to compare this date, and return all records where this specific date is younger than today I tried select id,name FROM clients where name ~ '(\d{4}\-\d{1,2}\-\d{1,2})'; but this isn't returning any values. How would I go about to achieve the results I want?

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• How to convert a PGresult to custom data type with libpq (PostgreSQL)

  - by mocopera

  Hi everyone! I'm using the libpq library in C to accessing my PostgreSQL database. So, when I do res = PQexec(conn, "SELECT point FROM test_point3d"); I don't know how to convert the PGresult I got to my custom data type. I know I can use the PQgetValue function, but again I don't know how to convert the returning string to my custom data type. Any suggestion? Thanks in advice.

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• OpenID authentication error

  - by Raindog

  When I try to login to this site using my yahoo openid, it takes me to the yahoo site, I click "continue" meaning that i want to send my authentication details to stackoverflow.com and stackoverflow.com gives me the following error underneath the login text field: Unable to log in with your OpenID provider: failed to authenticate, returning Failed. Please ensure your identifier is correct and try again.

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• Is or Are to prefix boolean values

  - by Brian T

  When naming a boolean, or a function returning a boolean it's usual to prefix with 'is' e.g. isPointerNull isShapeSquare What about when refering to multiple items, should it be: arePointersNull or isPointersNull areShapesNull or isShapesNull I can see arguments for both; is offers consistency and perhaps slightly better readability, are makes the code read in a more natural way. Any opinions?

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• Is a return statement mandatory for C++ functions that do not return void?

  - by AlwaysLearning

  My Herb Schildt book on C++ says: "... In C++, if a function is declared as returning a value, it must return a value." However, if I write a function with a non-void return type and do not return anything, the compiler issues a warning instead of an error: "Control reaches end of non-void function." I use gcc (MinGW) and have set the -pedantic flag.

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• how to return multiple records from a view in sql server 2008

  - by kumarreddy

  i have a view which presently returning single record when called....i like it to return three records may be upon inner joining a different view or temp table...as those records share the same data except single column... im not sure about this plz some one throw light on this please..thank you in advance

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• Why doesn't HashTable.Contains() just simply return false if it is passed a null?

  - by Nate Pinchot

  I understand why passing a null to HashTable.Contains() doesn't work, but I don't understand what the point of it throwing an ArgumentNullException is - instead of just simply returning false? What is the benefit of throwing the exception (other than to make me do null checks before calling .Contains())? Caused By [System.ArgumentNullException] Key cannot be null. Parameter name: key at System.Collections.Hashtable.ContainsKey(Object key) at System.Collections.Hashtable.Contains(Object key)

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• How to get attributes from an element in XML

  - by iSight

  I have constructed an XML tree structure of an XML file. I am able to trace the entire tree. When i want to retrieve the attributes of an element, it is returning as NSXMlNode of kind NSXMLAttributeKind. How can i extract the key value pairs in the attribute node.

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• How do you preserve the viewstate while using strongly typed views in asp MVC 2?

  - by Mark Kadlec

  I have an ActionResult returning from a strongly typed view where I manually validate some conditions, pass in an error message, but would like to preserve the users responses. Since my View is strongly typed, I am calling it like this: return View("PrincipalInvestigatorForm", new SmartFormViewModel(sections, questions)); My problem though, is that the error message is displayed but all the users data is wiped. How do I preserve the "ViewState" in MVC? Is there an easy way?

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• Knowing the type of the stored proc when invoking from C#

  - by dotnetdev

  I am making a windows service to be able to run operations on a sql server database (insert, edit, etc) and invoke Stored Procs. However, is there a way for me to know the type of the SP? When invoking from C#, I need to knof if it is returning 1 value, or more, or none (so I can use executereader, scalar, etc)? Thanks

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• Counting comma seperated values in php,how to?

  - by Jay

  Hey folks, I have a variable holding values separated by a comma (Implode), I'm trying to get the total count of the values in that variable however, count() is just returning 1. I've tried converting the comma separated values to a properly formatted array which still spits out1. So heres the quick snippet where the sarray session equals to value1,value2,value3: $schools = $_SESSION['sarray']; $result = count($schools); Any help would be appreciated.

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