parent-child

Linq-to-Sql: Update child collection

First table: School (Id, Name) Second table: Student (Id, SchoolId, Name) Suppose I have received updated roster for a school: var school = db.Schools.Single(s => s.Id == updatedSchoolId); school.Students = updatedStudents; db.SubmitChanges(); This does not work, since disconnected students will end up with SchoolId set to null (orph...

When programming iOS ViewControllers should you call parent class methods before or after your own code?

A new iOS ViewControllers created from a template contains several "boilerplate" methods that call their parent class methods. -(void) viewDidLoad { [super viewDidLoad]; } - (void) viewDidUnload { [super viewDidUnload]; } - (void) dealloc { [super dealloc]; } When modify these classes, should I put my own cod...

Concurrent Processes

I'm looking to run multiple concurrent processes in a C program. The programs will take arguments from the user and then execute each argument as a child process. I think that means that all I need to do is ensure that the fork() is performed by the original parent process each time, and then each of the resultant child processes will ru...

CoreData - How to make an entity enforce parent-child relationships with itself?

I'm wanting to make a CoreData entity called "Employees", some "Employees" could have a line manager (or boss). In basic pseducode, it could be described as: emp_id (PRIMARY KEY) emp_name emp_parent_id (INT *but optional as some people may not have line managers*) Another example I could use is "articles" an Article could have a pare...

How to split content with jquery after certain amount of divs

I have a form like this: <div class="content"> <form> <div class="item"> blablaform stuf </div> <div class="item"> blablaform stuf </div> <div class="item"> blablaform stuf </div> <div class="item"> blablaform stuf </div> </form> </div> Now I want to wrap a few of the item di...

Postgres SQL for joining parent-child audit tables

We're using a "1 audit table for each monitored Table" design; However, in our case emp(PARENT) table has a child table emp_address which also needs to be monitored, so we have emp_audit and emp_addr_audit tables. postgres audit SQL : how to join PARENT and CHILD tables for reporting purposes. /* Employee table */ create table emp...

Sending SIGSTOP to a child process stops all execution. C

When I call kill(Child_PID, SIGSTOP); from the parent, I expect the child to halt execution and the parent to continue. Is that the expected behavior or do I have to explicitly declare the SIGSTOP handler in the child? I have searched everywhere and not been able to find this information. Thanks. Braden ...

How do I printf() after a call to execlp() in a child process?

I am currently trying to print a message from a child process after calling execlp() within the child. However, nothing appears on the terminal after the call to execlp(). What causes my printf() calls to not display anything, and how can this be resolved? ...

Why $('a.current').parent('li').addClass('current'); is not working?

Why $('a.current').parent('li').addClass('current'); and $(this).hasClass('current').parent('li').addClass('current'); are not working? a click event must add li.current http://jsfiddle.net/laukstein/ytnw9/ Update: Dropbox is Down, so I updated http://jsfiddle.net/laukstein/ytnw9/1/ with full JS $(function(){ var list=$('#lis...

Any way to stop CSS :hover text-decoration underline on child?

Possible Duplicate: How do I get this CSS text-decoration issue to work? I'm using the jquery toggle effect to show or hide more information about list elements: jQuery(document).ready(function($) { $("ul p").hide(); $("ul li").addClass("link"); $("ul li").click(function () { $("p", this).toggle(300); }); ...

Allowing parent to process mouse event if event was not consumed by child

Hey, I have this frame: Here is what happens: When I'm over the Pinkish panel, the scroll pane works just fine. When I put the mouse over the Darker gray JTextArea the scroll pane does not get the event. In general my question is how can I make sure the parent of a component receives the event if the component didn't handle that ...

Why $('a.current').removeClass('current'); is not working?

Why $('a.current').removeClass('current'); is not working for this jquery tabs? http://jsfiddle.net/laukstein/ytnw9/8/ //full JS in http://jsfiddle.net/laukstein/ytnw9/8/ $(function(){ var list=$('#list'), elementsPerRow=-1, loop=true, // find first image y-offset to find the number of images per row topOffset=lis...

SSAS : Parent-Child Hierarchy

Parent-Child Hierarchy What's the best way to represent a Parent-Child hierarchy in the Cube? I've seen the Usage that can be applied as Parent. I've applied this, for example, ID ParentID CompanyName Rank 1 1 AAA Excellent 2 1 BBB Good 3 1 CCC Ok 4 1 DDD None I can link the ID and Pa...

How to get an instance of my object's parent

Is there a way in Java to get an instance of my object's parent class from that object? ex. public class Foo extends Bar { public Bar getBar(){ // code to return an instance of Bar whose members have the same state as Foo's } } ...

Reading a specific number of lines from a file in C (scanf, fseek,fgets)

I have a process master that spawns N child processes that communicate with the parent through unnamed pipes. I must be able to: make the father open the file and then send, to each child, a struct telling that it has to read from min to max line; this is going to happen at the same time, so I don't know: 1st how to divide total_lines ...

wait command wont wait for child process to finish c cpp c++

I am trying to write a c++ program that creates a child process, runs a command and pipes the output back to the input of a command the parent is running. I have the parent execute the wait(NULL) or wait((void*)pid) command but it does not wait. here is the code: #include <string.h> #include <fstream> #include <iostream> #include <uni...

SSIS Data Migration/Daily copy: Parent + Child then many Grandchild tables

Hi, I've read this link here, but this guy is doing a one off copy from 1st normal form to 3rd, so that's not what I'm doing: StackOverflowPosting I am going from 3rd normal form to 3rd normal form, pretty much the same design, on a daily basis, only copying hte new data. Example Data Parent ParentId Created Date Child ChildId ...

C# access parent class methods from another file

I was wondering if there was a way for an instance of a class to access its parent class's method(s) while preserving the data during runtime. (Did that make any sense?) I have a ConnectionManager that spawns several Connectors (which is in charge of COM port communications) if there is a multiple COM Port setup. file1.cs namespace c...

When I add a margin to a nested DIV, it causes the parent DIV to receive the margin instead, unless I give the parent DIV a border. Why?

Has anyone else ever ran across this? This is the second time it's come up in as many years and I am not sure the "correct" way to solve it. I can achieve the same results with padding in the child, but it just makes no sense. Testing in Safari/FF. ...

problems in select() and sending a signal SIGUSR1 in the end (C language)

HI, I'm implementing a classical map-reduce program in which I have a parent that spwans N children(maps) + 1(reduce). The parent sends info, through unnamed pipes, to each one of the N children. The maps process the request and send the result, an int, to reduce. The reduce does a select and sums up every counter writen on the pipes fr...