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Questions tagged [self-reference]

Self-reference is the ability of a program (or logical sentence) to refer to itself, either directly or indirectly.

Self-reference is the ability of a program (or logical sentence) to refer to itself, either directly or indirectly.

Useful Links:

Stanford Encyclopedia 'Self Reference' Entry

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596 questions
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Symmetric relationship in EF Code first

I'm not sure if I've got my wording correct (which might be why I'm struggling to find results). Here's what I'm trying to achieve: I'd like to be able to be able to add a collection of related products (Product B, Product C) to Product A. I'd like…
Nick Darvey
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How to unset an object which contains a self-reference?

I have found this solution, but perhaps there is a better one, what do you think about it? class A { #A self-reference private $_a; #Construcotr makes a self-reference public function __construct() { …
user2047060
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Is there a better way to self reference a type?

I'm finding lately a lot of code smells related to referencing generic classes in C#. My gripes especially apply to those classes which inherit from DependencyObject and contain DependencyProperties. The basic problem is that when declaring a…
jpierson
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Javascript: Define variable as anonymous function that calls the same function

I am given a function like this: //! Work on record. /*! \param[in] Record (object) Record. \param[in] AsyncCallback (function) Asynchronous callback which is called when the operation is complete. It takes no…
Pang
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SQL Server 2008 Delete Records from Self-Referencing Table in correct order

Possible Duplicate: SQL: DELETE data from self-referencing table in specific order I need to delete a sub set of records from a self-referencing table in SQL Server 2008. I am trying to do the following but it is does not like the order by. WITH…
KTrace
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SQL self-referencing query. JOIN

i need to query a self referencing relationship for unit prerequisites. i know that you need to use two Joins, do i SELECT my column and then join it to itself ? SELECT u.unit_code, u.name + ' is a prerequisite of ' + u.name AS…
LewisFletch
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How would you model contact list with self-reference and category?

Wrestling my head to model following User has many Contact categories (family/friends) One Contact category has many contacts One contact can be in one or more contact categories. I end up with following, but I still believe, there must be better…
Jakub Kuchar
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PHP - clone an object that contains references to itself?

What is the best way to create a clone of a complex PHP object that includes many references to itself, so that the new object's references point to its own methods and properties, not those of the original object? I understand from the manual that…
user56reinstatemonica8
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Finding the parent object in a self-referencing Java class

I've created a class to mimic a file structure for a program (a text-based game) I'm working on. This is a simplified version: public class Dir { public Dir(String name, Dir[] subdirs) { this.name = name; this.subdirs = subdirs; } …
ArmanX
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I am trying to change follower status from 'requested' to 'approved' in relationship model

I have a relationship table with followed_id, follower_id, and status. I am using "has many through" in my user model to create the association. A user has many following through and is following many through a reverse relationship. The status…
Tim
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Is it possible to emulate object methods in C?

Is it possible to emulate object methods in C? I'd like to be able self-reference a structure as a parameter to a member function argument e.g.: struct foo { int a; int (*save)(struct foo *); }; int save_foo(struct foo *bar) { // do…
ben lemasurier
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Many to Many (self related) specific order entity framework

Hello I'm trying to do the impossible apparently. I need a self referenced table with a many to many relationship to itself that also has a specific order in c# entity framework (4.2) database first. Think of it like Friends having Friends in…
psy
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Analog of 'arguments.callee' in Lua

Is there a way to refer to the currently executing anonymous function in Lua? Just like we can do in JavaScript with arguments.callee. E.g.: local function newLiftAnimator(obj) local count = 0 return function(event) -- animate obj's…
Vitaly
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SQL Server - Checking for integer (id) within hierarchy of ids

How would one go about checking whether a given ID is within a hierarchy of IDs? For example, let's say I have the following hierarchies in a self-referencing table called locations (e.g. these are hierarchical locations): -- Declare the locations…
rlarson
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How do I draw reflexive association if there are inheritance

My teacher gave us a homework to draw a class diagram using something like this class PersonRole{} class Employee{ isA PersonRole; } class Manager { isA Employee; 0..1 -- * Employee; } I know in order to draw a reflexive association, both…
AmazingEgg
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