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Having two models, Site and Link, where a site has many links, how do I delete a link from inside a method of Site, which doesn't have access to the object context?
I've tried something like:
public void DeleteFirstLink() { var link = LinkSet.First();...
Started by J. Pablo Fernández on
, 4 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
All actions are queued an ObjectContext object? Then as a quick solution you could pass it into the delete method and use in the state manager of the ....
You can't delete anything from the database without an object context.
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I'm writing a linked list and I want a struct's destructor (a Node struct) to simply delete itself, and not have any side effects. I want my list's destructor to iteratively call the Node destructor on itself (storing the next node temporarily), like ...
Started by Hooked on
, 9 posts
by 9 people.
Answer Snippets (Read the full thread at stackoverflow):
delete this; would call the destructor of the current object if you delete the outer object first you would have no way to access the inner pointers to delete a delete doesn't make....
Element in the linked list.
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In my code I use an object and variables inside a function. When in that function I no longer use the object and variables I delete it:
delete myObject; delete myVar;
Is it good practice?
Does it give speed?
My JavaScript is server-side on smart.joyent...
Started by webjay on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
And also instead of using....
In fact it is disallowed in the new ECMAScript Fifth Edition ‘strict mode’:
When a delete instead =null the variable to free up any object it referenced for garbage collection, but it's almost isn't sensible.
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Ask your Facebook Friends
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I want to have a "Delete"-link on a page viewing an object in my Ruby on Rails project. I am running into problems as
<%= link_to "Delete", @member, :confirm => 'Are you sure?', :method => :delete %>
loads the page it is on, when the method...
Started by nibbo on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
To create a before_filter in my controller which finds the object, and if it doesn't exist, it will automatically redirect back to a default index URL with an error message, like so:
def find_object @object = Object.find(params[:....
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I have a parent object which has a one to many relationship with an IList of child objects. What is the best way to delete the child objects? I am not deleting the parent. My parent object contains an IList of child objects. Here is the mapping for the...
Started by Mark Struzinski on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Try using merge() instead of....
Change cascade attribute value from "all" to "all-delete-orphan".
Will not necessarily delete the child object, but one way to do so is to set cascade=all-delete-orphan syntax though (sorry).
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I've spent the last 4 years in C# so I'm interested in current best practices and common design patterns in C++. Consider the following partial example:
class World { public: void Add(Object *object); void Remove(Object *object); void Update(); } class...
Started by Generic Error on
, 12 posts
by 12 people.
Answer Snippets (Read the full thread at stackoverflow):
Class Fire : Object { public: virtual void Update() { if(age > burnTime) { world.Remove(this); delete somevariable;....
In your case it looks like the World can just delete the object when() .
In a very straightforward way.
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Hi, I iterate through an array of objects and want to delete one of the objects based on it's 'id' property, but my code doesn't work.
foreach($array as $element) { foreach($element as $key => $value) { if($key == 'id' && $value == 'searched_value'...
Started by ecu on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Foreach($array as $elementKey =>.
Value'){ //delete this particular object from the $array unset($array[$elementKey]); } } }
It looks, or elements to remove, then delete the elements after the loop.
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I am quite sure I've seen the answer to this question somewhere, but as I couldn't find it with a couple of searches on SO or google, I ask it again anyway...
In Entity Framework, the only way to delete a data object seems to be
MyEntityModel ent = new...
Started by Tomas Lycken on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
In "plain old SQLI found this post , which....
If you delete an object you confirmed that you wanted to delete the object and the actual delete.
To let me know =)
Apologies in advance, but I have to question your goal .
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I have an app, using Core Data with a SQLite store.
At some point I'd like to remove all objects for a few entities. There may be close to a thousand objects.
From what I can tell via google and the official docs, the only way to delete objects is to ...
Started by Prody on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
It's an object graph management solution and it stores cached versions of your....
To remove all instances of a given managed object you'll have to fetch them and then delete eachThe issue is that CoreData isn't just a SQLite wrapper.
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Dear ladies and sirs.
We use NHibernate as our ORM on the server side.
Sometimes, there is a need to delete an object from the database, given only the type and ID of that object. In addition, the deleted object was not fetched before (so it is not in...
Started by mark on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Session.CreateQuery("delete from Table where id = :id.
You can also use HQL to delete it yourself.
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