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Questions tagged [parent-child]

A relationship between entities in which one acts in a major role and the other in a minor role. Also an inheritance relationship paradigm.

In software, a parent-child relationship may involve ownership and/or containership semantics.

Ownership usually makes allocation, initialization, and destruction of child nodes the responsibility of the parent node.

Containership in a visual system often makes rendering, coordinate systems, clipping, and z-order of the child nodes the responsibility of the parent node.

For Object Oriented inheritance the parent is the base class and the child is the derived class.

A C++ example of a parent class: A and a child class: B:

class A{};

class B : public A{};
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Height of parent div is zero even if it has child with finite heights

I have a website whose layout has been shown in the diagram. The body consists of a main container, which comprises of header, parent div and footer. The parent div further contains several child div as shown. The problem being height of all the…
Prashant Singh
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How to specify the parent query field from within a subquery in MySQL?

How do I specify the parent query field from within a subquery in MySQL? For Example: I have written a basic Bulletin Board type program in PHP. In the database each post contains: id(PK) and parent_id(the id of the parent post). If the post is…
justinl
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7 answers

get parent's view from a layout

I have a FragmentActivity with this layout:
Salvatore Ucchino
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Are child processes created with fork() automatically killed when the parent is killed?

I'm creating child processes with fork() in C/C++. When the parent process ends (or is killed for some reason) I want all child processes to be killed as well. Is that done automatically by the system? Or I have to do it myself? Pre-existing…
GetFree
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Why is forEach not working for children?

I have a
with some child
in it. E.g.
I tried to loop through them with the forEach function, because I thought that…
erik
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Selecting second children of first div children in javascript

I have an html that look something like this:
<-- I have this
<-- I need to get this
i am using: var mainDiv =…
James Harzs
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How do I pass a value from a child back to the parent form?

How do I pass a value from a child back to the parent form? I have a string that I would like to pass back to the parent. I launched the child using: FormOptions formOptions = new FormOptions(); formOptions.ShowDialog();
Jayne M
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How can I rename files with Grunt, based on the respective file's parent folder name?

I have a the following structure: src/ modules/ module1/ js/ main.js scss/ main.scss index.html module2/ js/ main.js …
keirog
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Search on descendants of an element

With protractor whats the best way to select child elements? Say we have the layout below...
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Brad8118
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JPA @OneToMany -> Parent - Child Reference (Foreign Key)

i have a Question about referencing ParentEntities from Child Entites ir If i have something like this: Parent.java: @Entity(name ="Parent") public class Parent { @Id @Generate..... @Column private int id; @OneToMany(cascade…
Sim0rn
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Start new process, without being a child of the spawning process

How would I go about starting a new process without it being the child of the calling process. Example: Main Program (Caller.exe) process.start("file.exe") Image:
Andrew Paglusch
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FormStartPosition.CenterParent does not work

In the following code, only the second method works for me (.NET 4.0). FormStartPosition.CenterParent does not center the child form over its parent. Why? Source: this SO question using System; using System.Drawing; using…
kol
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three.js - mesh group example? (THREE.Object3D() advanced)

I'm attempting to understand how to group / link child meshes to a parent. I want to be able to: drag the parent rotate child elements relative to the parent have parent rotation / translation do the right thing for children My only background in…
Daniel Smith
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When exactly is component destroyed?

In Angular 2 with Ahead-of-Time (AOT) compiling, I have a parent component and a child component, like this:

I am a parent

I know that the child template is inserted to the DOM…
gye
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