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What is difference between "new operator" and "operator new"?
Thanks.
Started by Sandeep on
, 8 posts
by 8 people.
Answer Snippets (Read the full thread at stackoverflow):
Both refer to the same thing use to create an object from the free store:
my_class *x = new my_class(0);
The difference betweenWhen you create a ....
+()
There's no difference between "new operator" and "operator new".
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Public class Foo : IFoo ...
What is the difference between
IFoo foo = new Foo();
and
Foo foo = new Foo();
Started by Barbaros Alp on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
That type = new SomeOtherIFooImplementation();
whereas with the second declaration you can only assign values.
The difference is just in the declared type of the variable.
Is an instance of a Foo object.
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I have see code like this
Dim s as something = new something Dim s as new something
what's the difference? is there any?
Started by Jack on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
There ....
There is no difference it exploding at runtime.
The first allows you to do:
Dim s as ParentType = new InheritedType
The second doesn'tI believe all you're doing is specifically casting something as something.
difference.
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What is the difference between new/delete and malloc/free?
Related (duplicate?): In what cases do I use malloc vs new?
Started by MrDatabase on
, 10 posts
by 10 people.
Answer Snippets (Read the full thread at stackoverflow):
Malloc & free....
new calls the ctor of the object, delete call the dtor.
The most relevant difference is that the new operator allocates memory then calls the constructor, and delete calls the destructor then deallocates the memory.
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Well title says it, what is the difference between Executors.newSingleThreadExecutor().execute(command) and new Thread(command).start();
Started by Gnarly on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
The new Thread() will print it to System.err
One noticeable difference, is when you run new Thread.
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What is the difference between an F5 (refresh) of a page and pasting that URL in a new window and clicking enter?
Any help is appreciated
Started by Ben on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
For most sites, copying the url to a new window or tab will start a new, a refresh will re-send the POST data....
When you hit depend on a lot of things.
Simply opening the site in a new tab will load any files from the cache first.
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What is the difference between "new" and "malloc" and "calloc" and others in family?
(When) Do I need anything other than "new" ?
Is one of them implemented using any other?
Started by Łukasz Lew on
, 8 posts
by 8 people.
Answer Snippets (Read the full thread at stackoverflow):
Likewisenew and delete....
New allocated memory and calls the constructors.
As for the difference: Malloc just allocates memory.
Malloc
the main difference between new and malloc I can recall is that you cannot reallocate memory.
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I've overloaded the global operator new/delete/new[]/delete[] but simple tests show that while my versions of new and delete are being called correctly, doing simple array allocations and deletes with new[] and delete[] causes the implementations in newaop...
Started by flippy on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Edit: Having multiple new[] and delete[] overloads could be considered a bit implementations in the exe)?
I don't know....
new[] allocates n objects and calls n constructors.
Operator new allocates one object and calls its constructor.
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Many years ago I remember a fellow programmer counselling this:
new Some::Class; # bad! (but why?) Some::Class->new(); # good!
Sadly now I cannot remember the/his reason why. :( Both forms will work correctly even if the constructor does not actually...
Started by Ether on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Rather, you should use Package->new() for two keeping the object around), it....
new Some::Class is called "indirect" method invocation, and it's bad because it introduces some going to have a new() function in the calling package.
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What is the difference between:
thread_envs[i] = soap_copy(&env);
and
thread_envs[i] = soap_new();
Sould we use one of them or both?
Started by Apollo on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
From the documentation:
struct soap *soap_new()
Allocates, initializes, and returns a pointer to a runtime environment
struct soap *soap_copy(struct soap *soap)
Allocates a new runtime environment and copies contents of the environment such....
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