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• What good programming practices will change with C++0x?

  - by Jon

  For example, "Don't return objects by value if they are expensive to copy" (RVO can't always be used). This advice might change because of rvalue references. The same might be said about storing collections of pointers to objects, because copying them by value into the collection was too expensive; this reason might no longer be valid. Or the use of enums might be discouraged in favour of "enum class". What other practices or tips will change?

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• Sending email to multiple recipients but only one will appear in the TO field

  - by Obay

  Is it possible to send an email to multiple recipients, but on the receiving end, the recipient will only see his/her email address? If so how do I do this and could you point me to some references? Thanks

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• How to see list of html-tidy errors in VIM for Windows?

  - by stumbling

  I am using Vim 7.2 on WinXP. I've tired to run tidy like this: :compiler tidy :make :copen When I do :copen it shows me no errors to jump to. I've seen references that shellpipe might need to be set a specific way, but that refers to an earlier version of VIM. How should I be using HTML-tidy with VIM, and do I need to mess with shellpipe to get it to work with WinXP?

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• how do i consume net.tcp binding within web project?

  - by user1871124

  I'm working on a web application using mvc, we have already a service that does http binding, the client wants tcp binding for certain actions (not really sure why) but it's their requirement so i'm attempting to set up net.tcp binding, all references i am seeing to doing this involve a windows application and not a web application. I guess my question has 2 parts, first can you run httpbinding and net.tcp binding at the same time through the same service/project. secondly how would I consume the service through a webproject?

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• Phpmyadmin mysql foreign key help

  - by Alan

  Hey guys i'm using phpmyadmin (php & mysql) and i'm having alot of trouble linking the tables using foreign keys. I'm getting negative values for the field countyId (which is the foriegn key). However it is linking to my other table fine and it's cascading fine. So when I go to add data there will be a drop box for the CountyId and the vlaues will look something like this, " -1 1- " Here is my alter statement, ALTER TABLE Baronies ADD FOREIGN KEY (CountyId) REFERENCES Counties (CountyId) ON DELETE CASCADE

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• Why can't I SELECT a parent field that doesn't have a child?

  - by myaccount

  (rest_branches) is the table of restaurants. (phone_numbers) is another table which contains the restaurants phone_numbers, and it has a field called (branch_id) which references the restaurant id. When I try: SELECT * FROM rest_branches NATURAL JOIN phone_numbers I only get the restaurants which have a phone_number. What should I do to get all restaurants even if they don't have a phone number?

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• mysql error dont understand what it is saying

  - by sea_1987

  Cannot add or update a child row: a foreign key constraint fails (`mydb`.`job_listing_has_employer_details`, CONSTRAINT `job_listing_has_employer_details_ibfk_2` FOREIGN KEY (`employer_details_id`) REFERENCES `employer_details` (`id`)) INSERT INTO `job_listing_has_employer_details` (`job_listing_id`, `employer_details_id`) VALUES (6, '5') What does this mean? The two ID's I am inserting into the table exsist.

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• Closure vs Anonymous function (difference?)

  - by Maxim Gershkovich

  Hi, I have been unable to find a definition that clearly explains the differences between a closure and an anonymous function. Most references I have seen clearly specify that they are distinct "things" yet I can't seem to get my head around why. Could someone please simplify it for me? What are the specific differences between these two language features? Which one is more appropriate in what scenarios?

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• Function to convert a z-score into a percentage

  - by Daniel

  Google doesn't want to help! I'm able to calculate z-scores, and we are trying to produce a function that given a z-score gives us a percent of the population in a normal distribution that would be under that z-score. All I can find are references to z-score to percentage tables. Any pointers?

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• What do you consider a good API Documentation?

  - by Daniel

  I have always liked the documentation on Java APIs, generally speaking, but I know some people consider them lacking. So I'm wondering, what do you consider a good example of API documentation? Please, include a link or an actual example in any answer. I want to have references that I (and others, of course) can use to improve our own documents.

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• pass reference of array lists to a function

  - by bhavna raghuvanshi

  I need to pass two array list references to a function and return the reference of merged array list. how can i do it???? pls help.... public int merge(ArrayList x, ArrayList y) { List all = new ArrayList(); all.addAll(x); all.addAll(y); System.out.println(all); return all; } is it correct???

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• How can I affect PATH in a makefile variable? Why is my example not working?

  - by Geo

  At the beginning of a makefile I have this line : PATH := $(PATH):/other/dir and this gives this error: Recursive variable 'PATH' references itself. What do I have to do so it works?

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• Looking for a full list of jQuery event types.

  - by serg555

  Where I can find a complete list of all jQuery supported events (like click, mouseup etc) with some explanations when they are triggered? I am looking for those that can be binded: $('#foo').bind('click', handler); For example I just found out by accident that there is paste event but I can't find any references to it anywhere in their docs. What else is there?

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• How does Dictionary<T> work with key objects that don't implement Equals and GetHashCode?

  - by DayOne

  If I place a key object in an Dictionary that doesn't implement Equals and GetHashCode how does the Dictionary ContainsKey work? By checking the references are equal? Thanks

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• Ways to determine size of complex object in .NET?

  - by Polaris878

  Are there ways at determining the total size of a complex object in .NET? This object is composed of other objects and might hold references to other complex objects. Some of the objects encapsulated by this object might be POD, others may not.

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• .Net 4.0 dlls in a SharePoint 2010 Project

  - by Élodie Petit

  How can I create and use a SharePoint 2010 project that references a .Net 4.0 class library project? Is that possible?

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• Java: Making reference null after closing stream

  - by Hei

  Is it a good practice to set stream references to null after closing them? Would this release resources in any way? Example: BufferedReader input= new BufferedReader(new FileReader("myfile.txt")); // code input.close(); input = null; // possible more code

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• one to many mapping within the same table in Hibernate..

  - by saurabh

  I have a table containing primary key and foreign key that references same table. How can I implement this mapping in hibernate...

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• DateTime.Now within a statement

  - by jarrett

  In the below thisIsAlwaysTrue should always be true. DateTime d = DateTime.Now; bool thisIsAlwaysTrue = d == d; But does DateTime.Now work in such a way that isThisAlwaysTrue is guaranteed to be true? Or can the clock change between references to the Now property? bool isThisAlwaysTrue = DateTime.Now == DateTime.Now;

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• referencing desired objects in namespaced functions

  - by RyOnLife

  I'm having trouble referencing the desired object when I've namespaced functions. No problems here: obj.test = function() { // this == obj } But I'm getting tripped up when I namespace: obj.namespace.test = function() { // this == namespace } In the latter example, I know this references namespace, but I want to reference obj. How can I do it?

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• MySQL: NOW() giving me zeros

  - by Tunji Gbadamosi

  I have a table which I want to record the timestamp of every order at every insertion time. However, I'm getting zero values for the timestamps. Here's my schema: CREATE TABLE IF NOT EXISTS orders( order_no VARCHAR(16) NOT NULL, volunteer_id VARCHAR(16) NOT NULL, date TIMESTAMP DEFAULT NOW(), PRIMARY KEY (order_no), FOREIGN KEY (volunteer_id) REFERENCES volunteer(id) ON UPDATE CASCADE ON DELETE CASCADE)

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• JVM memory management & garbage collection book?

  - by Max

  Hi. Could anyone advice a book (or any other source) that would thoroughly reveal internals of JVM memory management & garbage collection (optimization, work, circular references, pecularities, discussions for various JVM impls...)? [What I've found so far are separate articles devoted to various aspects but no weighty tome :). Some good materials for Hotspot implementation are here. ] Thanks a lot for any advice you give.

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• Generate Delete Statement From Foreign Key Relationships in SQL 2008 ?

  - by Element

  Is it possible via script/tool to generate a delete statement based on the tables fk relations. i.e. I have the table: DelMe(ID) and there are 30 tables with fk references to its ID that I need to delete first, is there some tool/script that I can run that will generate the 30 delete statements based on the FK relations for me ? (btw I know about cascade delete on the relations, I can't use it in this existing db) I'm using Microsoft SQL Server 2008

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• Function to swap pointers in Objective-C

  - by Michael

  - (void) swapController:(MyViewController*)controller1 with:(MyViewController*)controller2 { MyViewController *swap = controller2; controller2 = controller1; controller1 = swap; } Looks like this doesn't work because I'm not passing references. How to do it anyway?

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• Java: If I overwrite the .equals method, can I still test for reference equality with ==?

  - by shots fired

  I have the following situation: I need to sort trees based by height, so I made the Tree's comparable using the height attribute. However, I was also told to overwrite the equals and hashCode methods to avoid unpredictable behaviour. Still, sometimes I may want to compare the references of the roots or something along those lines using ==. Is that still possible or does the == comparison call the equals method?

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